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magma
  • Member for 10 years, 9 months
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740 votes
12 answers
209k views

Does $\pi$ contain all possible number combinations?

  • 7,401
502 votes
7 answers
21k views

"The Egg:" Bizarre behavior of the roots of a family of polynomials.

  • 26.1k
281 votes
27 answers
22k views

Why do mathematicians use single-letter variables?

  • 2,943
250 votes
6 answers
25k views

In (relatively) simple words: What is an inverse limit?

  • 373k
241 votes
6 answers
76k views

What books must every math undergraduate read?

  • 1,968
236 votes
6 answers
306k views

Eigenvectors of real symmetric matrices are orthogonal

  • 3,658
224 votes
26 answers
64k views

Good books and lecture notes about category theory.

217 votes
10 answers
28k views

Exterior Derivative vs. Covariant Derivative vs. Lie Derivative

173 votes
2 answers
18k views

Open problems in General Relativity

  • 2,706
166 votes
20 answers
28k views

Striking applications of integration by parts

  • 3,101
131 votes
16 answers
17k views

Why did mathematicians take Russell's paradox seriously?

  • 3,221
130 votes
4 answers
30k views

What is category theory useful for?

  • 103k
129 votes
20 answers
89k views

Real life applications of Topology

  • 2,879
127 votes
8 answers
25k views

Are half of all numbers odd?

  • 1,388
124 votes
8 answers
26k views

When to learn category theory?

  • 2,744
123 votes
8 answers
11k views

Why “characteristic zero” and not “infinite characteristic”?

  • 25.6k
109 votes
23 answers
61k views

Complete course of self-study [closed]

102 votes
19 answers
5k views

Good Physical Demonstrations of Abstract Mathematics

  • 12.3k
101 votes
5 answers
10k views

What concept does an open set axiomatise?

  • 83k
101 votes
4 answers
7k views

True or false? $x^2\ne x\implies x\ne 1$

  • 1,031
98 votes
7 answers
66k views

Is the vector cross product only defined for 3D?

  • 1,801
92 votes
1 answer
4k views

In categorical terms, why is there no canonical isomorphism from a finite dimensional vector space to its dual?

87 votes
9 answers
20k views

What is a universal property?

84 votes
10 answers
11k views

100 Soldiers riddle

83 votes
14 answers
28k views

How to effectively and efficiently learn mathematics [closed]

77 votes
10 answers
13k views

Is learning (theoretical) physics useful/important for a mathematician?

  • 2,744
75 votes
17 answers
9k views

Mathematical subjects you wish you learned earlier [closed]

74 votes
2 answers
30k views

What is the proper way to study (more advanced) math?

  • 251
73 votes
18 answers
11k views

Why should we prove obvious things?

  • 1,160
72 votes
5 answers
7k views

Why should I care about adjoint functors

  • 4,520
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