Question

Verification of proof that $Y$ nowhere dense iff $X\setminus \overline{Y}$ is dense.

score 106 · Answer 1 · 2026-04-13 14:49:35

106

Views

Verification of proof that $Y$ nowhere dense iff $X\setminus \overline{Y}$ is dense.

Published on 13 Apr 2026 - 14:49

score 352 · Answer 2 · 2026-04-10 22:40:06

352

Views

Property of compact set K contained in an open set G

Published on 10 Apr 2026 - 22:40

score 145 · Answer 3 · 2026-04-13 03:47:48

145

Views

Monotonicity and Continuity for a function.

Published on 13 Apr 2026 - 3:47

score 108 · Answer 4 · 2026-04-16 13:22:50

108

Views

Proving $8 | x^2 + y^2$ iff x,y are both even is false

Published on 16 Apr 2026 - 13:22

score 3.1k · Answer 5 · 2026-04-10 17:59:42

3.1k

Views

Simple Proof of Binomial Theorem for Negative Integer Powers

Published on 10 Apr 2026 - 17:59

score 89 · Answer 6 · 2026-04-15 03:16:56

89

Views

Compute the homology groups $H_∗(X, X−p)$ for points $p∈X$ where $X = S(\Bbb CP^2)$

Published on 15 Apr 2026 - 3:16

score 286 · Answer 7 · 2026-04-17 12:21:37

286

Views

Extremely difficult exercise Apostol calculus 1 (I 3.5 Ex.10)

Published on 17 Apr 2026 - 12:21

score 105 · Answer 8 · 2026-04-15 18:27:19

105

Views

Local Representation Theory Alperin Ex 1.4.

Published on 15 Apr 2026 - 18:27

score 235 · Answer 9 · 2026-04-10 04:24:41

235

Views

Is it $Z(\operatorname{Aut}(G)) \cap \operatorname{Inn}(G) \cong H/Z(G)$ for some $H \le G$?

Published on 10 Apr 2026 - 4:24

score 118 · Answer 10 · 2026-04-15 10:04:06

118

Views

Show that if $a_n\rightarrow a$ then $\frac{a_1+...+a_n}{n}\rightarrow a$

Published on 15 Apr 2026 - 10:04

score 37 · Answer 11 · 2026-04-13 08:23:43

37

Views

Question on modular arithmetic and well defined functions

Published on 13 Apr 2026 - 8:23

score 83 · Answer 12 · 2026-04-15 16:04:29

83

Views

Sum of digits of $A$ + sum of digits of $B$, such that $A + B = N$

Published on 15 Apr 2026 - 16:04

score 50 · Answer 13 · 2026-04-14 08:28:00

50

Views

Show that if $X$ is continuous then the probability space is continuous

Published on 14 Apr 2026 - 8:28

score 89 · Answer 14 · 2026-04-13 20:37:41

89

Views

Wronskian Determinant of solutions of a linear homogeneous equation can be identically zero or not zero at all.

Published on 13 Apr 2026 - 20:37

score 141 · Answer 15 · 2026-04-11 01:04:39

141

Views

Discontinuity of monotonic function

Published on 11 Apr 2026 - 1:04

List Question

Verification of proof that $Y$ nowhere dense iff $X\setminus \overline{Y}$ is dense.

Property of compact set K contained in an open set G

Monotonicity and Continuity for a function.

Proving $8 | x^2 + y^2$ iff x,y are both even is false

Simple Proof of Binomial Theorem for Negative Integer Powers

Compute the homology groups $H_∗(X, X−p)$ for points $p∈X$ where $X = S(\Bbb CP^2)$

Extremely difficult exercise Apostol calculus 1 (I 3.5 Ex.10)

Local Representation Theory Alperin Ex 1.4.

Is it $Z(\operatorname{Aut}(G)) \cap \operatorname{Inn}(G) \cong H/Z(G)$ for some $H \le G$?

Show that if $a_n\rightarrow a$ then $\frac{a_1+...+a_n}{n}\rightarrow a$

Question on modular arithmetic and well defined functions

Sum of digits of $A$ + sum of digits of $B$, such that $A + B = N$

Show that if $X$ is continuous then the probability space is continuous

Wronskian Determinant of solutions of a linear homogeneous equation can be identically zero or not zero at all.

Discontinuity of monotonic function

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