Question

On the Lebesgue outer measure of the close interval

score 46 · Answer 1 · 2026-04-28 09:46:14

46

Views

On the Lebesgue outer measure of the close interval

Published on 28 Apr 2026 - 9:46

score 308 · Answer 2 · 2026-04-15 18:15:45

308

Views

Proving that an acyclic graph with $n$ vertices has $\leq n-1$ edges

Published on 15 Apr 2026 - 18:15

score 70 · Answer 3 · 2026-04-13 03:15:23

70

Views

Prove a space is not finite dimensional

Published on 13 Apr 2026 - 3:15

score 86 · Answer 4 · 2026-04-16 04:15:26

86

Views

How to prove $\sqrt{\frac{x+1}{x^3-x^2}}=\frac{\frac1x+1}{\sqrt{x^2-1}}$

Published on 16 Apr 2026 - 4:15

score 100 · Answer 5 · 2026-04-13 18:21:01

100

Views

Proving a topology

Published on 13 Apr 2026 - 18:21

score 137 · Answer 6 · 2026-04-16 00:36:58

137

Views

Find the number of normals that can be drawn through the point $(0,\frac12)$ to the ellipse $\frac{x^2}2+y^2=1$

Published on 16 Apr 2026 - 0:36

score 48 · Answer 7 · 2026-04-15 02:35:46

48

Views

Prove $\lim_{x\to -\infty} x^n = \infty$ if $n>0$ is even.

Published on 15 Apr 2026 - 2:35

score 43 · Answer 8 · 2026-04-14 10:26:33

43

Views

Showing that a relation defined on a vector space is a partial order

Published on 14 Apr 2026 - 10:26

score 188 · Answer 9 · 2026-04-12 23:33:51

188

Views

Exercise 13 on p.38 in Exercises 2B in "Measure, Integration & Real Analysis" by Sheldon Axler. Is my proof ok?

Published on 12 Apr 2026 - 23:33

score 159 · Answer 10 · 2026-04-12 23:07:20

159

Views

How can one prove that if discriminant of a quadratic function is zero, then it is perfect square?

Published on 12 Apr 2026 - 23:07

score 47 · Answer 11 · 2026-04-12 22:17:55

47

Views

The concept of the solution space and its possible combination in the logical (Binary) modeling

Published on 12 Apr 2026 - 22:17

score 143 · Answer 12 · 2026-04-12 10:57:01

143

Views

Geodesics are extremals with constant speed proof

Published on 12 Apr 2026 - 10:57

score 436 · Answer 13 · 2026-04-16 03:23:00

436

Views

Solve the differential equation : $(x^2y-2xy^2)dx-(x^3-3x^2y)dy=0.$

Published on 16 Apr 2026 - 3:23

score 45 · Answer 14 · 2026-04-16 04:55:40

45

Views

Covariance matrix having lower rank then dimension of the r.v. implies observations lie on a lower dimensional hyperplane, but why?

Published on 16 Apr 2026 - 4:55

score 90 · Answer 15 · 2026-04-15 22:44:47

90

Views

Verify my proof: if $5 ∤ n^2$ then $ 5 ∤ n $

Published on 15 Apr 2026 - 22:44

List Question

On the Lebesgue outer measure of the close interval

Proving that an acyclic graph with $n$ vertices has $\leq n-1$ edges

Prove a space is not finite dimensional

How to prove $\sqrt{\frac{x+1}{x^3-x^2}}=\frac{\frac1x+1}{\sqrt{x^2-1}}$

Proving a topology

Find the number of normals that can be drawn through the point $(0,\frac12)$ to the ellipse $\frac{x^2}2+y^2=1$

Prove $\lim_{x\to -\infty} x^n = \infty$ if $n>0$ is even.

Showing that a relation defined on a vector space is a partial order

Exercise 13 on p.38 in Exercises 2B in "Measure, Integration & Real Analysis" by Sheldon Axler. Is my proof ok?

How can one prove that if discriminant of a quadratic function is zero, then it is perfect square?

The concept of the solution space and its possible combination in the logical (Binary) modeling

Geodesics are extremals with constant speed proof

Solve the differential equation : $(x^2y-2xy^2)dx-(x^3-3x^2y)dy=0.$

Covariance matrix having lower rank then dimension of the r.v. implies observations lie on a lower dimensional hyperplane, but why?

Verify my proof: if $5 ∤ n^2$ then $ 5 ∤ n $

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