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Mathematics
Andrew Cheong's user avatar
Andrew Cheong's user avatar
Andrew Cheong's user avatar
Andrew Cheong
  • Member for 12 years, 1 month
  • Last seen more than a week ago
  • New York, NY, United States
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About

Early web dev (1999 to around when jQuery came out), a decade of C++ in stock exchanges, and now Java in ad tech.

Here, I used to go by A—— C——, farmed XP on the tag to wield fake authority on unrelated subjects, ♦'ed a beta site, and created the SOCVR chatroom. (I take no credit for the community it's grown into today, that was @rene et al.)

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193
Can a coin with an unknown bias be treated as fair?
Apr 2, 2014
25
Ways to study mathematics while commuting
Jun 27, 2014
8
Is there a general pattern behind the decimal expansion of $\frac{1}{7}$ being $.14+.0028+.000056+.00000112+...=.\overline{142857}$?
Feb 1, 2014
7
Recurrence relation in a Student Attendance problem
Apr 24, 2017
4
How do I solve $x=\log^e{(x+1)}$ analytically?
Sep 29, 2014
4
When adding or subtracting two infinite sums, why is there no issue with "staggering" or arbitrarily manipulating the "alignment" of terms?
Apr 28, 2016
4
How is this equivalence for flipping an equation of ket-vectors to an equation of bra-vectors, true? (Complex conjugate "distributes" across product?)
May 4, 2023
3
How do you derive the continuous analog of the discrete sequence $1, 2, 2, 3, 3, 3, 4, 4, 4, 4, ...$?
Aug 8, 2014
2
Calculating probabilities around "overlapping" events.
Jun 24, 2014
2
Integral of the product of a power function and an arbitrary exponentiated function
Dec 15, 2015
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562
Regular expression to allow spaces between words
110
Is it naive to tell my current employer that I'll be leaving, months in advance?
105
Is there anything better I can say to coworkers after taking a day off for mental health, when they ask?
96
Is it possible to increment numbers using regex substitution?
91
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