Question

Clarification on definition of a norm in a real analysis problem

score 423 · Answer 1 · 2026-04-10 06:26:48

423

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Clarification on definition of a norm in a real analysis problem

Published on 10 Apr 2026 - 6:26

score 497 · Answer 2 · 2026-04-13 02:58:23

497

Views

How to determine the convergence of $\sum \frac 1 {n!}\left(\frac n e\right)^n$ using Raabe's test

Published on 13 Apr 2026 - 2:58

score 137 · Answer 3 · 2026-04-14 02:29:28

137

Views

Calculate the sum $\sum_{n=1}^\infty \frac{2^nx^n}{n}$

Published on 14 Apr 2026 - 2:29

score 81 · Answer 4 · 2026-04-12 05:52:26

81

Views

Convergent/divergent series: comparison test

Published on 12 Apr 2026 - 5:52

score 809 · Answer 5 · 2026-04-10 21:52:56

809

Views

Calculate convolution (integral)

Published on 10 Apr 2026 - 21:52

score 1.2k · Answer 6 · 2026-04-12 08:53:46

1.2k

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Can a subsequence repeat a term finitely many times?

Published on 12 Apr 2026 - 8:53

score 559 · Answer 7 · 2026-04-11 14:34:22

559

Views

Why Taylor series for $\sin$ about 0 does not converges uniformly to $\sin$ on $\mathbb{R}$?

Published on 11 Apr 2026 - 14:34

score 644 · Answer 8 · 2026-04-13 02:02:07

644

Views

If $Y$ is a compact subset of $X$, and $Z\subset Y$, then $Z$ is compact if and only if $Z$ is closed.

Published on 13 Apr 2026 - 2:02

score 247 · Answer 9 · 2026-04-15 08:23:15

247

Views

If $Y_1,...,Y_n$ are a finite collection of compact subsets of $X$, then their union $Y_1\cup....\cup Y_n$ are also compact.

Published on 15 Apr 2026 - 8:23

score 135 · Answer 10 · 2026-04-11 03:27:51

135

Views

Differentiability of a multivariable function with directional derivatives existing

Published on 11 Apr 2026 - 3:27

score 41 · Answer 11 · 2026-04-15 19:23:28

41

Views

$\{x: 2x^2\cos(1/x) \le 1\} \cup \{0\}$ is complete.

Published on 15 Apr 2026 - 19:23

score 53 · Answer 12 · 2026-04-16 15:11:14

53

Views

Value of $S_{10}+I_{10}$

Published on 16 Apr 2026 - 15:11

score 27 · Answer 13 · 2026-04-16 21:58:34

27

Views

Property of continuous functions and monotonic functions on disconnected sets

Published on 16 Apr 2026 - 21:58

score 66 · Answer 14 · 2026-04-15 07:42:46

66

Views

Compute $\int{\frac{t^{n-1}-1}{(t+1)^{n+1}}dt}$

Published on 15 Apr 2026 - 7:42

score 35 · Answer 15 · 2026-04-15 16:27:37

35

Views

Bound difference of gaussians

Published on 15 Apr 2026 - 16:27

List Question

Clarification on definition of a norm in a real analysis problem

How to determine the convergence of $\sum \frac 1 {n!}\left(\frac n e\right)^n$ using Raabe's test

Calculate the sum $\sum_{n=1}^\infty \frac{2^nx^n}{n}$

Convergent/divergent series: comparison test

Calculate convolution (integral)

Can a subsequence repeat a term finitely many times?

Why Taylor series for $\sin$ about 0 does not converges uniformly to $\sin$ on $\mathbb{R}$?

If $Y$ is a compact subset of $X$, and $Z\subset Y$, then $Z$ is compact if and only if $Z$ is closed.

If $Y_1,...,Y_n$ are a finite collection of compact subsets of $X$, then their union $Y_1\cup....\cup Y_n$ are also compact.

Differentiability of a multivariable function with directional derivatives existing

$\{x: 2x^2\cos(1/x) \le 1\} \cup \{0\}$ is complete.

Value of $S_{10}+I_{10}$

Property of continuous functions and monotonic functions on disconnected sets

Compute $\int{\frac{t^{n-1}-1}{(t+1)^{n+1}}dt}$

Bound difference of gaussians

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