Mathematics
ryang's user avatar
ryang's user avatar
ryang's user avatar
ryang
  • Member for 11 years, 3 months
  • Last seen this week
Profile Activity
Stats
33,552
reputation
879k
reached
1,047
answers
223
questions
Communities
About

$$\Large\stackrel{\bigodot\kern-0.975em\bullet\bigodot\kern-0.975em\bullet}{\Huge\smile}$$

Badges
View all badges
13
gold badges
73
silver badges
164
bronze badges
Top tags
View all tags
559
Score
343
Posts
27
Posts %
261
Score
144
Posts
11
Posts %
231
Score
125
Posts
10
Posts %
206
Score
125
Posts
10
Posts %
203
Score
101
Posts
8
Posts %
169
Score
87
Posts
7
Posts %
Top posts
View all questions and answers
All Questions Answers
Score Newest
question
25
Proof that no permutation can be expressed both as the product of an even number of transpositions and as a product of an odd number of transpositions
Dec 27, 2011
answer
21
Extra solutions when solving $\sin\theta+\cos\theta=\sqrt{2\sin2\theta}$
Sep 27, 2021
question
20
The definition of locally Lipschitz
Oct 8, 2013
question
20
Relationship between cross product and outer product
Aug 13, 2012
answer
18
What is wrong with the following u-substitution?
Nov 13, 2017
answer
17
Is this alternative proof that $\sqrt 2$ is irrational sound?
Jun 15, 2022
answer
16
If $x = 1$, then $x + 1 = 5$. Is it a logical proposition?
Aug 24, 2021
question
14
An inequality from Littlewood's Miscellany
Jun 11, 2013
question
14
A non-square matrix with orthonormal columns
Aug 14, 2012
answer
13
How can I avoid the wrong solution when squaring both sides of an equation?
Jul 24, 2022
Top Meta posts
1
7
7
About a possible change of instructions to ask a question, for beginners.
3
Requests for Reopen & Undeletion Votes (volume 01/2022 - today)

Your privacy

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.