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  • Member for 11 years, 3 months
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13 votes
3 answers
392 views

New mathematical results in fiction work

12 votes
3 answers
2k views

Some intuitive vision on abstract algebra

11 votes
4 answers
4k views

Are these open sets?

6 votes
3 answers
4k views

What's the meaning of $\dagger$

6 votes
1 answer
3k views

Conformal transformation of curvature tensor

6 votes
1 answer
267 views

Geodesics of this metric

5 votes
2 answers
6k views

$A$ closed in $Y$ and $Y$ closed in $X$ , then $A$ is closed in $X$

5 votes
5 answers
3k views

Arithmetic progression topology

4 votes
1 answer
166 views

Determining $\langle a,b,c\mid 6a+9b+6c=0, 8a+12b+4c=0\rangle^{\operatorname{ab}}.$

4 votes
1 answer
575 views

Number of teeth in gears

3 votes
1 answer
805 views

Integrating a 0-form

3 votes
1 answer
189 views

Complex integration substitution

3 votes
1 answer
7k views

What's a singular differential equation?

3 votes
1 answer
307 views

Kuratowski theorem in Möbius band

3 votes
1 answer
315 views

Help visualizing this quotient space

3 votes
1 answer
3k views

Proof of the second Bianchi identity

2 votes
0 answers
421 views

Complexity of $\gcd$ algorithm

2 votes
2 answers
107 views

How to do this integral: $\int_0^\infty e^{ikt}\sin(pt)dt$?

2 votes
2 answers
47 views

Can a pure gradient be made equal to an arbitrary function?

2 votes
1 answer
160 views

Differential homogenous equation

2 votes
2 answers
192 views

How to prove a $k$-$1$ differential form is simple

2 votes
1 answer
89 views

Terms of a $k$-form

2 votes
2 answers
373 views

Proof about covariant derivative

2 votes
1 answer
421 views

Check this topology exercise.

2 votes
1 answer
131 views

Calculating the norm of an infinite vector

1 vote
1 answer
294 views

Help understanding a proof in differential geometry

1 vote
1 answer
96 views

Determine the matrix of a quadratic function

1 vote
3 answers
77 views

Dimension of a space

1 vote
1 answer
48 views

Question about implicit functions of this form

1 vote
2 answers
91 views

Question about infinity sum