Question

Solving Intervals Problem Without Outer Measure

score 50 · Answer 1 · 2026-03-26 08:03:52

50

Views

Solving Intervals Problem Without Outer Measure

Published on 26 Mar 2026 - 8:03

score 130 · Answer 2 · 2026-04-02 12:29:58

130

Views

Can the irrationality of $\sqrt3$ be proven geometrically by infinite descent, similarly to Tom Apostol's proof of the irrationality of $\sqrt2$?

Published on 02 Apr 2026 - 12:29

score 135 · Answer 3 · 2023-08-17 20:45:42

135

Views

An alternative definition of the limit of a function

Published on 17 Aug 2023 - 20:45

score 39 · Answer 4 · 2023-08-19 22:53:03

39

Views

Is it possible to prove all main integral properties for the discreet sum integral formula?

Published on 19 Aug 2023 - 22:53

score 30 · Answer 5 · 2026-03-31 22:51:42

30

Views

To check the sign and convexity of a transcendental function using naive approach

Published on 31 Mar 2026 - 22:51

score 189 · Answer 6 · 2023-08-21 20:33:47

189

Views

The fourth power of any integer has the form $8m$ or 8m + 1 for some integer m.

Published on 21 Aug 2023 - 20:33

score 249 · Answer 7 · 2026-04-04 06:03:18

249

Views

Any other methods for evaluating $\int_{0}^{\frac{\pi}{4}}\frac{\arctan(\cos(x))}{\cos(x)}\,dx$

Published on 04 Apr 2026 - 6:03

score 228 · Answer 8 · 2023-08-27 00:07:56

228

Views

Finding an upward-opening catenary passing through $(x_1,y_1),(x_2,y_2)$ with length $L$

Published on 27 Aug 2023 - 0:07

score 46 · Answer 9 · 2023-08-27 16:48:27

46

Views

Is possibile to prove the equality $\left(⋃_{X∈\mathfrak X}X\right)×\left(⋃_{Y\in\mathfrak Y}Y\right)=⋃_{(X,Y)∈\mathfrak X×Y}(X×Y)$ using projections?

Published on 27 Aug 2023 - 16:48

score 100 · Answer 10 · 2026-04-03 05:14:25

100

Views

Alternative Proof for Surjections over finite groups

Published on 03 Apr 2026 - 5:14

score 76 · Answer 11 · 2023-08-29 10:28:45

76

Views

A question about general associative law for intersection and union.

Published on 29 Aug 2023 - 10:28

score 51 · Answer 12 · 2023-08-31 04:19:09

51

Views

Find the Length of Parallel Line Through Trapezoid's Diagonals Intersection with given Bases Lengths

Published on 31 Aug 2023 - 4:19

score 215 · Answer 13 · 2026-04-04 21:06:11

215

Views

Is every finite scheme affine?

Published on 04 Apr 2026 - 21:06

score 393 · Answer 14 · 2023-09-01 16:44:16

393

Views

Evaluating $\sum_{i=1}^{\infty} \sum_{j=1}^{\infty} \frac{1}{ij(i+j)^2}$

Published on 01 Sep 2023 - 16:44

score 50 · Answer 15 · 2023-09-04 13:54:50

50

Views

A simpler approach to Brezis' Proposition 8.5

Published on 04 Sep 2023 - 13:54

List Question

Solving Intervals Problem Without Outer Measure

Can the irrationality of $\sqrt3$ be proven geometrically by infinite descent, similarly to Tom Apostol's proof of the irrationality of $\sqrt2$?

An alternative definition of the limit of a function

Is it possible to prove all main integral properties for the discreet sum integral formula?

To check the sign and convexity of a transcendental function using naive approach

The fourth power of any integer has the form $8m$ or 8m + 1 for some integer m.

Any other methods for evaluating $\int_{0}^{\frac{\pi}{4}}\frac{\arctan(\cos(x))}{\cos(x)}\,dx$

Finding an upward-opening catenary passing through $(x_1,y_1),(x_2,y_2)$ with length $L$

Is possibile to prove the equality $\left(⋃_{X∈\mathfrak X}X\right)×\left(⋃_{Y\in\mathfrak Y}Y\right)=⋃_{(X,Y)∈\mathfrak X×Y}(X×Y)$ using projections?

Alternative Proof for Surjections over finite groups

A question about general associative law for intersection and union.

Find the Length of Parallel Line Through Trapezoid's Diagonals Intersection with given Bases Lengths

Is every finite scheme affine?

Evaluating $\sum_{i=1}^{\infty} \sum_{j=1}^{\infty} \frac{1}{ij(i+j)^2}$

A simpler approach to Brezis' Proposition 8.5

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