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Q&A Meta

Posts by whybecause‭

23 posts
Score Age
77%
+5 −0
Q&A How $ijk=\sqrt{1}$?

posted 3y ago by whybecause‭  ·  edited 3y ago by whybecause‭

Answer
77%
+5 −0
Q&A How's it possible to arrange 0 objects? How can 0! = 1?

posted 3y ago by whybecause‭  ·  edited 3y ago by whybecause‭

Answer
75%
+4 −0
Q&A $\int_{E_n} |g|^q = \left| \int_E \chi_{E_n}\cdot \text{sgn}(g)\cdot g \cdot |g|^{q-1}\cdot |g| \right|$

0 answers  ·  posted 3y ago by whybecause‭  ·  edited 3y ago by Derek Elkins‭

Question real-analysis Lp-space
75%
+4 −0
Q&A Is it impossible to prove Jensen's inequality by way of step functions?

1 answer  ·  posted 3y ago by whybecause‭  ·  last activity 3y ago by whybecause‭

Question real-analysis convex-analysis Jensen's-inequality
75%
+4 −0
Q&A Missing a solution: Are A and B always equal if A-B=0

posted 3y ago by whybecause‭

Answer
75%
+4 −0
Q&A Are we in a "history-valley" for Topology?

2 answers  ·  posted 3y ago by whybecause‭  ·  last activity 3y ago by Derek Elkins‭

Question topology history-philosophy-of-math
71%
+3 −0
Meta Questions with a quote/screenshot and a request to explain

posted 3y ago by whybecause‭

Answer
71%
+3 −0
Q&A "Pointwise equicontinuity implies uniform" implies compact

1 answer  ·  posted 3y ago by whybecause‭  ·  last activity 3y ago by whybecause‭

Question real-analysis equicontinuity continuity metric-spaces
71%
+3 −0
Meta How can we grow this community?

posted 3y ago by whybecause‭

Answer
62%
+3 −1
Meta How to write the big Xi notation in MathJax?

posted 3y ago by whybecause‭

Answer
60%
+1 −0
Q&A How can I justify whether I'm able to apply the Gaussian elimination method to this system?

posted 3y ago by whybecause‭

Answer
60%
+1 −0
Q&A $\{f_n\}\to f$ in $X$ implies $||f||\le\liminf||f_n||$

1 answer  ·  posted 3y ago by whybecause‭  ·  last activity 3y ago by whybecause‭

Question real-analysis functionals normed-vector-space
60%
+1 −0
Q&A Why 1. multiply the number of independent options? 2. add the number of exclusive options?

posted 3y ago by whybecause‭

Answer
60%
+1 −0
Q&A Intuitively, why does $p$ vary inversely with $P(C_3 \mid D_2)$? But directly with $P(C_2 \mid D_3)$?

posted 3y ago by whybecause‭  ·  edited 3y ago by whybecause‭

Answer
60%
+1 −0
Meta Solely reputable textbooks ought be cited.

posted 3y ago by whybecause‭

Answer
60%
+1 −0
Meta Should there be more than one sort of math community?

3 answers  ·  posted 3y ago by whybecause‭  ·  last activity 2mo ago by Peter Taylor‭

Question feature-request
60%
+1 −0
Q&A Without calculations, how can you visualize "that half the squares are white and half are black"?

posted 3y ago by whybecause‭  ·  edited 3y ago by whybecause‭

Answer
50%
+0 −0
Meta Book suggestion category proposal

posted 3y ago by whybecause‭

Answer
50%
+0 −0
Q&A $\{f_n\}\to f$ in $X$ implies $||f||\le\liminf||f_n||$

posted 3y ago by whybecause‭  ·  edited 3y ago by whybecause‭

Answer
50%
+0 −0
Q&A "Pointwise equicontinuity implies uniform" implies compact

posted 3y ago by whybecause‭

Answer
50%
+0 −0
Q&A Is it impossible to prove Jensen's inequality by way of step functions?

posted 3y ago by whybecause‭

Answer
50%
+0 −0
Q&A Intuitively, why can $a, b$ cycle in ${\color{red}{b}} = \frac c{\color{red}{a}} \iff {\color{red}{a}} = \frac c{\color{red}{b}}$?

posted 3y ago by whybecause‭  ·  edited 3y ago by whybecause‭

Answer
50%
+0 −0
Q&A In general, does $\color{forestgreen}{P(A|M)} + \color{red}{P(B|M)} = 1$?

posted 3y ago by whybecause‭  ·  edited 3y ago by whybecause‭

Answer