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comment What is the significance to our number and degrees systems?
Duplicate of duplicate? math.stackexchange.com/questions/340467/… and math.stackexchange.com/questions/142735/…. Found these with a search for why 360 degrees
2d
comment Is ideal an “anti-field”?
+1 for addressing the intuition behind the OPs question.
Jul
28
comment why do we need integration in the probability or measure theory?
Related: math.stackexchange.com/questions/587840/…. And try a google search for uses of integration.
Jul
27
comment Find bounded function satisfying f(0)=0, f'(0)=0, and bounded first and second derivatives
Trig is a good place to start. How about $\sin^2{x}$?
Jul
26
comment explanation of notation in programming problem
See csl.mtu.edu/cs4321/www/Lectures/….
Jul
25
comment explanation of notation in programming problem
The answers below all address your notation question. None discusses it as a programming question. Computing those factorials is not a good way to compute the final answer. There are lots of others. A course in data structures and algorithms will discuss the pros and cons.
Jul
25
awarded  Custodian
Jul
25
reviewed Approve Explaining elementary arithmetic in terms of group theory
Jul
24
revised Explaining elementary arithmetic in terms of group theory
edited body
Jul
24
answered Explaining elementary arithmetic in terms of group theory
Jul
22
comment Definitions for complex numbers
Related: math.stackexchange.com/questions/1364439/…
Jul
21
comment If $\frac{a+b}{b+c}=\frac{c+d}{d+a}$ then..
Question. Are you sure you copied (B) correctly from your source?
Jul
19
answered boundedness theorem for continuous functions question
Jul
18
comment Tangent to the curve
Your answer is correct (as the answers show). If you drew a picture for yourself you might have had more confidence in it.
Jul
18
comment a maximum of 128 independent rules
For illustrations of some of these 256 rules, see mathworld.wolfram.com/ElementaryCellularAutomaton.html. They're fun and interesting even if you don't believe with Wolfram that they solve all the problems of the universe.
Jul
17
revised Proof of the reciprocal of all semiprimes diverging?
added an observation
Jul
17
answered Proof of the reciprocal of all semiprimes diverging?
Jul
17
comment The Sieve of Alice- Number theory Riddle
Hint. The best line of thinking is to compute some small examples. Work this out by hand for $N=12$ and $N=15$ and you'll see which half of the numbers remain. That should be a clue for a formal proof. (I'm pretty sure someone will jump in with a full solution before you have time to do this.)
Jul
17
answered Most natural intro to Complex Numbers
Jul
15
revised Solve for x with an expression of independent variable in the exponent
added 1 character in body