Wesley

# 81 Questions

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2
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89
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35
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### Show that $\sum_{n=1}^{\infty}\sin \left(\frac{n\pi}{3} \right)\frac{1}{n^r}$ diverges for $0<r<1$

Oct 8 at 20:05 Wesley 552

1
vote
1
answer
45
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1
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3
answers
141
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1
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2
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289
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1
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1
answer
200
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1
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2
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45
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1
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1
answer
73
views

1
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0
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40
views

### Question regarding terminlogy and wording of the derivative

Apr 27 '16 at 4:25 Wesley 552
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1
vote
1
answer
258
views

1
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0
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2k
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### Cases of reversible and irreversible operations in algebra

Nov 16 '15 at 2:56 Wesley 552

1
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1
answer
570
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0
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0
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27
views

### Deriving the formula for a $d$-dimensional unit ball from a recurrence relation

May 17 at 0:18 Wesley 552

0
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2
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26
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0
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1
answer
18
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0
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0
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11
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### Analog of Sas's theorem for circumscribing

May 2 at 7:18 Wesley 552

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1
answer
54
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0
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1
answer
22
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0
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1
answer
26
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0
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2
answers
32
views

0
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0
answers
18
views

### N has all divisors up to 31 except two

Mar 19 at 21:28 Wesley 552

0
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0
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21
views

### Convex sets of width 1 have segments of length 1 in every direction

Feb 27 at 19:45 Wesley 552

0
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1
answer
24
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0
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1
answer
17
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0
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0
answers
45
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### Always a hyperplane through the origin between a point and a convex cone

Feb 20 at 23:28 the_fox 2,900

0
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0
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73
views

### No group of order 10000 is simple

Jan 18 at 16:22 Rei Henigman 71

0
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1
answer
47
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0
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1
answer
31
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0
votes
0
answers
26
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### Showing that three rings are isomorphic

Nov 28 at 3:14 Wesley 552

0
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1
answer
45
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