ELI5: Explain Like I'm 5

Quotient (universal algebra)

Okay! So, you know how when you have a bag of candy and you want to share it with your friends, you split it up into equal parts? Well, in math, something similar happens with something called a "group" or a "ring".

A group or a ring is like a set of numbers or other mathematical things that follow certain rules, kind of like how you and your friends have to follow certain rules when you play a game together.

Now, when you have two things in a group or a ring that you want to combine, you might not always get something that is still in the group or the ring. It's like if you have two different colors of Play-Doh and you smoosh them together - it might look pretty, but it's not one of the original colors anymore!

But sometimes, we want to be able to combine things in a group or a ring and still get something that is also in the group or the ring. This is where quotient comes in!

Quotient is like a fancy way of saying "what's left over" after you divide or split something up. So, if you have a group or a ring and you want to combine two things in it, but you want to make sure that the thing you get is still in the group or the ring, you can use quotient.

Here's an example: let's say we have a group of numbers that can be written as multiples of 3, like 0, 3, 6, 9, etc. If we want to add 5 and 7 together, we'll get 12, but 12 isn't in our group of multiples of 3! So instead, we can use quotient to get the "remainder" or what's left over.

Quotient works kind of like this:

- First, we divide the number we want to add (5 + 7 = 12) by the "factor" of the group or the ring. In this case, the factor is 3, because all the numbers in our group are multiples of 3.
- We get a quotient (or a whole number that tells us how many times the factor goes into the number we're adding), which is 4.
- Then, we multiply the factor by the quotient (3 x 4 = 12) to get the "closest" number to our original sum that is still in the group.
- Finally, we subtract that number from our original sum (12 - 12 = 0) to get the remainder or what's left over.

So in this case, our quotient is 4, the "closest" number in our group to 12 is 12 itself, and our remainder is 0. This means that if we want to combine 5 and 7 in our group of multiples of 3, we get 0 - so there's nothing "left over" or outside of our group!

That's the basic idea of quotient in universal algebra - it's a way of combining things in a group or a ring and still getting something that's in the group or the ring, by using the remainder or what's left over after dividing things up.
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