#Cardinality
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bluekino · 1 year ago
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have anyone ever think about the cardinality of the infinity train? like, is the infinity train infinite as in the integers or is it infinite as in the real numbers?
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oneefin · 11 months ago
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finished huntinality 3! whew what a great time
our super small super casual team "huh?" consists of me, @nivrad00, and @lunacyecho. we had fun!
i'll do a writeup of at least one puzzle from it sometime - there were many great moments in there for me. for now here's a screenshot of our spreadsheet's landing page (contains hunt spoilers)
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adjoint-law · 2 years ago
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Honestly I felt so vindicated knowing this. Thanks, gacha game~
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talkingnumbers · 1 year ago
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Counting, Counting
Mathober Day 8: Counting
We talk a lot with preservice teachers about the importance of counting. And with each new kind of number! Low counting numbers, double digit, higher place value, fractions, decimals, negatives, and, bending the definition a bit, imaginary and matrices. We need to connect number with quantity before learners have cardinality.
To some extent, we did that today with radians!
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algebra-as-praxis · 1 year ago
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First post!! I wanted to show you how deep a rabbit hole you can dig with a very simple concept like, "What does 'four' mean?"
I have a number line.
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So, I'd like you to imagine that you've sat down across from me on your first day in class, and I put some kind of math worksheet with this number line on it that gives you a very simple-sounding task: "Circle four."
If you are like nearly every one of the older students I've had, you'll circle the number 4 on the line. And I'd say something like, "That is a perfectly reasonable response to this request. There is nothing wrong with what you've done. But aren't you suspicious about how simple this question sounds? Did you see that there was a twist coming?"
On a number line, the place where we've written 4 is not actually the value 4. It is more like the position 4; we would call this the ordinal number (a number used to track the positional order of things; another example of an ordinal number is the word "fourth," which tells you that there are three other things before that one).
So, if you just circled the number 4, you definitely circled the position, but the thing you circled isn't worth 4. If you were going to circle the thing that has the value (or cardinality, since we're counting individual objects) of 4, it would look something more like this:
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This is because in order to have the value of 4, you need everything that came before it! Imagine counting out candy while your kid sister steals and eats the candies you counted already. When you get to your final number, that number is not how many candies you have, but rather how many you counted cuz your sister's got 'em all! For the value of your candies to stay the same, you need all of them to be there!
"Four" could also look, less straightforwardly, like this:
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The distance from the start of the circle to the end is four; and since we're circling the line, the length of the line that is circled is four. If we imagine the circle starts (from the left) at the position of 2.3, it would have to end at the position (from the right) 6.3. If we find the difference of the numbers at these positions, we would be doing the equation 6.3 - 2.3 = 4.
A quick summary:
The position of a number is shown with an ordinal number.
The actual physical quantity of the individual items is shown with a cardinal number, which we more typically call the value.
We can find a value inside the ordinals by finding the distance between any two ordinals, via subtraction.
Okay... But notice we've used two words here that seem to imply the same thing: difference and distance. Let's clear this up real quick:
Difference is the result of subtraction. Generally, if we want to find the difference between two things, we subtract the first thing from the second thing:
second - first = difference
But that's not a rule, so much as a norm. In reality, if you wanted to find the difference of two numbers, the person asking had best be very clear which way they want you to do it, because if you reverse this you will get the negative of the result above!
For example, if you were asked to find the difference between 6 and 15, you would do 15 - 6 = 9. But if it's not clear and you instead did 6 - 15, you get -9.
If, however, someone wanted to know how far apart these two numbers are, they would not be asking the difference but rather the distance between these numbers. The result would therefore be the absolute value of either one of these subtractions:
|15 - 6| = |9| = 9, |6 - 15| = |-9| = 9 Same result!
This is in actuality the real use of absolute values. Absolute value is typically shown as "the distance from zero," which is kind of true? But it's really for finding distances of any kind -- in fact, it's later used to mean exactly that when you get into complex algebra (that is, algebra with imaginary numbers) and linear algebra (matrices and vectors).
But that's for later.
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beaft · 1 year ago
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can anyone tell me why i enter the grocery store a normal person and emerge as some sort of vile ravening monster
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redactedrem · 9 months ago
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Headcanon where after so many arguments between the batkids and Bruce over his paranoia and complete disregard for his kids privacy, the entire family had compromised with (in the healthiest way possible) downloading life360 on their phones and that's how they all keep track of each other.
Now Bruce knew that this is mostly for his benefit and is supposed to be a healthy alternative for his unhealthy paranoia and helicopter parenting, but what he wasn't expecting was for his kids to start keeping track of him.
He's putting gas in his car and Dick calls him because apparently Dick has been watching him drive around on the app? And Bruce is currently at a gas station thats right around the corner from a Taco Bell and now Dick wants him to get food for everyone since he's already there.
He's driving home from a meeting and Steph calls him because her and Duke were shopping in the area and wants to know if he can pick them up, when he asks how she knew he was on the same street, he gets a "Oh I just like to stalk everyone on the app for funsies." as an answer.
Jason calls him and he can barely get out a hello before Jason cuts him off, "Bruce why the fuck is your phone battery on 5%, charge your damn phone" which completely stuns him because why does he know that. He clears his throat before answering. "Jason, what?"
"Everyone can see each others phone batteries on '360, now charge your phone." Is all he gets before Jason hangs up on him.
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canisalbus · 7 months ago
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✦ Freshly ordained ✦
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charyou-tree · 1 year ago
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If that hurts your brain, get this: There are different infinities, and some are bigger than others.
There are an infinite amount of Natural Numbers (counting numbers), but if you had an infinite amount of time you could list them all one by one.
You know, 1, 2, 3, 4, 5, 6, ...
Where the ... implies an endlessly continuing sequence. It would take forever to get through them all, but if you actually had forever you could do it.
But, while there are also an infinite amount of Real Numbers, there are vastly more of them than there are natural numbers. You couldn't even begin to list them all, even with unlimited time.
Like, ok, maybe you start at 0. That's sensible enough.
What's the next Real Number?
Its not 1, there's plenty of real numbers between 0 and 1, like 1/2 and 0.95 and 1/pi. You might say its 0.00001 or something, but you can always find numbers between 0.00001 and 0. You could start to think that maybe its something like 0.0000...1 with some arbitrary number of zeroes after the decimal place, but no matter how small of a real number you pick, you can always find infinitely more Real Numbers between it and 0.
Not only can you never finish listing all the Real Numbers, but there are so many of them there's not even any reasonable way to start listing them.
For a more formal sense of why this must be true, look into Cantor's Diagonal Argument:
Fundamentally, the amount of Natural Numbers is the smallest type of infinity, which is referred to as Countably Infinite, while the amount of Real Numbers is a larger size of infinity referred to as Uncountably Infinite. (many mathematicians define even larger types of infinite sets called Large Cardinals, although it is an open--and perhaps undecidable--question of whether there are any sizes of infinite sets in between Countably and Uncountably Infinite, see: Continuum Hypothesis)
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Poetry Comics Month, Day 30: Infinity
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mx-pastelwriting · 2 months ago
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Saving My Fanfiction Work
First. Side note: This post was only intended to give resources to fanfiction writers and enjoyers. My talk on recent political events was a context/reasoning on why I made this post. Also I’ve had to add more information to this post over time due to people’s confusion in my comments. Explaining it was to make sure that this post didn’t come off as out of the blue for my followers and this community. Which is fanfiction.
Also, why I made this post was from people asking if they could download my fanfiction because of the recent political events in America hence why I named it “saving my fanfiction work” and added my context. So this was also a post to tell people that liked my fanfiction they could download it as long as it was for their personal collection. I merely just wanted to list resources to people who wanted to download fanfiction and don’t know where to start or don’t have the immediate resources. I’m not here to fear-monger. I am just giving resources and the reasoning on why I’m giving them along with urging people to look into those information/recent events as staying aware is important. I respect everybody who’s given their opinion and yes, some of my grammar in this post is not adequate as this post was merely made for giving/stating resources.
Lastly, I will no longer update this post with comments as I’ve said my peace, nor will I pay attention to the notifications as they are muted. As my page is for fanfiction not politics. Thank you for the people in this community who share this post for the resources see you around the tags! Stay safe friends!!✨ Remember I love you! And you are loved!💛
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Due to the recent events in the United States. To clarify the recent events being Trump becoming president of the United States, Project 2025 more than likely going to be integrated. If you are not familiar with Project 2025 I urge you to look it up.
Along with the KOSA bill that has many problems and it has passed the senate now needing the finally vote in the house, which both are majority red. Go here to learn more on why it needs to be stopped and how you can. This is another component that will harm our communities. Go to: stopkosa.com
With all of its harmful plans some of the plans are to take down/restrict internet sites that have LGBTQ+ communities that means communities like the fan-fiction communities/sites in the United States.
I am only giving resources to those inside and out of the US in case they banned sites that hold fan-fiction. Better safe than sorry.
Being that I live in the US the possibly of mine and many others Fanfiction has the possibly of being in danger. Therefore I'm giving you recourses. (I'm not leaving or stopping my writing, I'm here for the fight!)
For those wanting to save my fanfiction, I give you permission to download them off of AO3 and to be used for your personal collection. Meaning, your eyes only. To clarify I’m saying this as others have asked if they could download my fanfic so for those who would like to you can.
If you do not know how to download them many others on online have tutorials on how to download them and add them to our phone libraries.
Here are some links to tutorials:
Downloading Fanfic
Adding to Iphone & Android Library
Adding to Kindle Library - Video on How (On TikTok)
Adding Book Covers (At the bottom) - Good EPUB Cover Changer (I use this)
Types of Files and What they mean
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Please stay safe out there! Remember to follow the rules below.
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DO NOT share the downloaded file anywhere online.
DO NOT repost the downloaded file under your name.
Fanfiction is protected under copyright law when plagiarism is involved. If you plagiarize my work, either a piece or whole in any language, I will take legal action. Inspiration or the same idea does NOT apply to this, only word-for-word plagiarism in any language.
♥ mx-pastelwriting does not consent to their fanfiction being copied, copied & credited, translated, used in videos and/or audios, screenshotted, used in AI, or reposted on any other platform without permission.
♥ mx-pastelwriting does give consent to "reblog," sharing links to direct work, and being in recommend lists.
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Please stay safe out there friends! I love you so much! Know that there will always people that love you and in for the fight to make sure you are loved!
And here are some resources in case you don’t feel okay! Resources here
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herpsandbirds · 15 days ago
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Blue Jay (Cyanocitta cristata), family Corvidae, order Passeriformes, and Northern Cardinal (Cardinalis cardinalis), family Cardinalidae, order Passeriformes, get into a Kerfuffle, MI, USA
photograph by Kevin Dunham
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be-ny · 6 months ago
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the slayification of copia
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scottpartridge · 5 months ago
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Trio of popular backyard birds - chickadee blue jay cardinal 
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the-pigeon-queen · 5 months ago
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As eldest, picking the movie on movie night is his birthright
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renewherself · 1 year ago
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Huntinality III: Hunts Upon a Time
Link's Final Stand
- Identified the sell prices as indicators of word length for the rebus solutions (rupee number divided by 100) and attack power as the numbers for indexing - Identified rebuses for CAPRICE, DISCOVERED, EARNEST, GENERATING, TENANTS, and THINKING - Identified mechanic where the solutions to the rebuses were the ways to defeat the various Ganondorf forms (as their sort-of opposites)
Into the Woods [Meta]
- Identified "SEE THE KING" as a possible candidate for an unsolved feeder puzzle and caught an oversight where "SELL THE COW" had two possible slots where it could fit and had been inserted into the wrong one
Missing Members
- Identified the extraction method: use ROYGBIV ordering for the colors associated with each substring and read the first letters of the substrings
Around the World
- Identified 8/12 of the video games - Identified 30/45 of the locations, characters, items, and objectives clued - Figured out the ordering method for extraction: order by video game release year - Figured out the question being asked, clued by the extracted phrase GIANT SPARROW, was WHAT REMAINS OF EDITH FINCH, and the answer and final puzzle answer was FINCH
Weaving
- Figured out the clues "Process which breaks on reordering" and "In rock is ore" were a pair and had to be interwoven together to produce the cryptic crossword clue "PROCESS IN WHICH ROCK BREAKS IS ON ORE REORDERING" and the answer "EROSION"
Creatures [Meta]
- Figured out that each letter of the alphabet only appeared once in the first halves of the clues, as indicated by the flavor text, which was an altered version of "The quick brown fox jumped over the lazy dog" - Figured out that the answers to the clues needed to be paired with the feeders to produce the name of a specific animal species, e.g. + (Animal/coloration descriptor) ZEBRA + FINCH + (Autonomous prefecture) CHUXIONG + FIRE-BELLIED NEWT - Figured out the answer to the clue "Headgear descriptor" was CASQUED to pair with the feeder OROPENDOLA
What's Next?
- Solo-solved, including figuring out that the solutions to the rebuses all appeared in the lyrics to the Billy Joel song "We Didn't Start the Fire" and indexing into the item that occurs next in the list in the song
Are You The One?
- Figured out the clues indicated wordplay that revealed which letters each person wanted to see in their perfect match's name, including: + Match who appreciates a good kayak or racecar and loves their mom is AVA + Someone who can drive them around is GIOVANNI + Partner who follows a straight edge lifestyle is HEATH + Match who will sit down and rest after adding a man to their life is OTTO + Partner who knows all the right angles for pictures is ELLIE
How Many Reps?
- For the Chinese Zodiac subpuzzle, figured out that the clues "VASTLY POWERFUL," "VEER ONTO A TANGENT," and "DON'T RUSH" belonged to this category with the respective answers of "STRONG AS AN OX," "DOWN A RABBIT HOLE," and "HOLD YOUR HORSES" - Also figured out the extraction method for this subpuzzle: indexing the place of each animal in the Chinese Zodiac into each associated clue phrase to get WALRUSSIA
Candies and Stories
- Identified the altered fairy tale titles "THE FOG AND THE SPARROW," "THE RUBBER BRIDEGROOM," and "THE WOLF AND THE KITS"
Keep Out
- Determinedly (teammates spectated me continuing to solve this puzzle even after the last meta had been solved) solo-solved (except for places where my math was corrected by teammates because sleep deprivation caused me to forget everything I knew about PEMDAS), including: + Creating a comprehensive map of the text adventure game in Google Sheets + Identifying the chemical compounds used as ingredients + Figuring out the two ingredients needed for each colored cauldron had to be related to a real life compound that causes fire to change to that color...and then proceeding to brute force the ingredients because I was very tired and thought that would be easier than just looking up the compounds in question + Figuring out the signs being described in the text adventure game were GHS hazard pictograms based on the text in the first room that says, "DANGER: Gruesome Horrific Science inside." + Figuring out each set of secret rooms represented the NFPA fire diamond for the chemical compounds used to unlock the rooms
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t00thpasteface · 7 months ago
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a convenient birding guide
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