goblin

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How do you revise material that you already half-know, without getting bored and demotivated?

soft-question self-learning asked Aug 6 '17 at 8:30

math.stackexchange.com

80 votes

Determinant of a non-square matrix

linear-algebra matrices definition determinant asked Jul 2 '14 at 11:04

math.stackexchange.com

49 votes

Is Pythagoras the only relation to hold between $\cos$ and $\sin$?

abstract-algebra trigonometry asked Sep 19 '14 at 6:55

math.stackexchange.com

48 votes

What recent programmes to alter highly-entrenched mathematical terminology have succeeded, and under what conditions do they tend to succeed or fail?

soft-question ho.history-overview terminology convention asked Jul 11 '14 at 8:38

mathoverflow.net

46 votes

Struggling with “technique-based” mathematics, can people relate to this? And what, if anything, can be done about it?

soft-question asked Mar 3 '13 at 2:39

math.stackexchange.com

35 votes

Is $\mathbb{N}$ impossible to pin down?

logic soft-question model-theory philosophy foundations asked May 9 '13 at 11:40

math.stackexchange.com

33 votes

I don't get the relationship between differentials, differential forms, and exterior derivatives.

differential-geometry asked May 11 '15 at 13:12

math.stackexchange.com

33 votes

Cross product in higher dimensions

linear-algebra vectors orthogonality multilinear-algebra cross-product asked Jul 25 '17 at 10:04

math.stackexchange.com

30 votes

Smallest Subset of $\mathbb{R}_{>0}$ Closed under Typical Operations

number-theory reference-request algebraic-number-theory real-numbers transcendental-numbers asked Dec 26 '14 at 14:48

math.stackexchange.com

29 votes

Rotated $\ltimes$ symbol

rotating asked Sep 19 '12 at 21:53

tex.stackexchange.com

Top Answers

171

Pedagogy: How to cure students of the “law of universal linearity”?

math.stackexchange.com

Is $\pi$ equal to $180^\circ$?

math.stackexchange.com

Does associativity imply commutativity?

math.stackexchange.com

Mathematicians ahead of their time?

math.stackexchange.com

“IFF” (if and only if) vs. “TFAE” (the following are equivalent)

math.stackexchange.com

Is there a way to prove that $2+2$ really equals $4$?

math.stackexchange.com

How to tell what dimension an object is?

math.stackexchange.com

Should I send professors money for illegally downloading their books?

academia.stackexchange.com

Why cannot a set be its own element?

math.stackexchange.com

Why do goblins never form societies bigger than about 500 members?

worldbuilding.stackexchange.com

Is it bad form to write mysterious proofs without explaining what one intends to do?

math.stackexchange.com

Algebraic Structures that do not respect isomorphism

math.stackexchange.com

If gravity isn't a force, then why do we learn in school that it is?

physics.stackexchange.com

Zero divided by zero must be equal to zero

math.stackexchange.com

If an inequality is true for all natural numbers, is it necessarily true for all real numbers inbetween?

math.stackexchange.com

How do people who study really abstract mathematics “imagine” or understand the concepts they are studying or being taught?

math.stackexchange.com

Group Theory via Category Theory

math.stackexchange.com

I almost quit self-studying mathematics, but should I continue?

math.stackexchange.com

Is a ring a set?

math.stackexchange.com

Why there is no sign of logic symbols in mathematical texts?

math.stackexchange.com

What really is mathematical rigor? How can I be more rigorous?

math.stackexchange.com

Could this identity have an application?

math.stackexchange.com

When stating a theorem in textbook, use the word “For all” or “Let”?

math.stackexchange.com

What happens if you strip everything but the “between” relation in metric spaces

mathoverflow.net

Why do both sine and cosine exist?

math.stackexchange.com

Do the axioms of set theory actually define the notion of a set?

math.stackexchange.com

Where are the axioms?

math.stackexchange.com

Is it legal for a company to offer free coding courses to women only?

law.stackexchange.com

properties that real numbers hold but complex numbers does not

math.stackexchange.com

What actually is a polynomial?

math.stackexchange.com

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goblin

How do you revise material that you already half-know, without getting bored and demotivated?

Determinant of a non-square matrix

Is Pythagoras the only relation to hold between $\cos$ and $\sin$?

What recent programmes to alter highly-entrenched mathematical terminology have succeeded, and under what conditions do they tend to succeed or fail?

Struggling with “technique-based” mathematics, can people relate to this? And what, if anything, can be done about it?

Is $\mathbb{N}$ impossible to pin down?

I don't get the relationship between differentials, differential forms, and exterior derivatives.

Cross product in higher dimensions

Smallest Subset of $\mathbb{R}_{>0}$ Closed under Typical Operations

Rotated $\ltimes$ symbol