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1d
answered Reference for book on fundamental abstract algebra topics
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comment Reference for book on fundamental abstract algebra topics
I personally strongly recommend against trying to wade through Lang's book if it's your absolute first exposure to abstract algebra.
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answered Is there a nice way to simplify this expression?
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revised Is there a nice way to simplify this expression?
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answered What is the maximum value of $ \sin x \sin {2x}$
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revised The process of solving the inequality $\frac{8}{19} x\ge -1$
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comment Check my proof by contradiction…
How do you know dividing by $2$ results in a smaller number?
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revised Check my proof by contradiction…
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Aug
19
comment Assumptions in Word Problems (Calculus)
@Aakarsh For the same reason that if somebody gives me an ingredient list for chocolate pudding, I don't assume that they're forgetting to mention the two tablespoons of anchovy paste. It's not like the question is ambiguous, and the phrasing might imply there's a leak. There is absolutely no indication that there's a leak. That's something that you invented entirely.
Aug
19
answered Assumptions in Word Problems (Calculus)
Aug
19
answered Alternate ways to find the limit of a given sequence
Aug
19
comment Mathematics - The big picture
This is sort of pretty but has close to zero informational value.
Aug
19
answered Why are all convergent sequences necessarily Cauchy?
Aug
17
comment how to hinge-dissect an 1-omino to 3-omino?
There's no (dissections) tag?
Aug
17
revised how to hinge-dissect an 1-omino to 3-omino?
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Aug
16
comment Relaxed magic squares
You might be able to simplify the problem with a bit of group theory... note that relaxed magic square are preserved under row or column swap and rotations.
Aug
16
comment Is $a \circ b = \sqrt{a^2+b^2}$ ever a group?
@MichaelTMckeon Actually, considered purely with the operation $\circ$, $\mathbb H$ is indeed a commutative group.
Aug
16
comment Is $a \circ b = \sqrt{a^2+b^2}$ ever a group?
@MichaelTMckeon $\mathbb H$ isn't a ring.
Aug
16
comment Is $a \circ b = \sqrt{a^2+b^2}$ ever a group?
Is this the same as the algebraic closure of $\mathbb Z_2$?
Aug
16
revised Is $a \circ b = \sqrt{a^2+b^2}$ ever a group?
added 111 characters in body