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May 30, 2013 · In programming languages we are habitual of using asterisk (*) symbol for multiplication sign. I was wondering how time can map to a cross (or x alphabet symbol) …

May 16, 2019 · I want to verify if a method is called at least once through mockito verify. I used verify and it complains like this: …

Apr 3, 2015 · The escape sequence you're using does not represent the × sign. It represents U+274C CROSS MARK, which is an entirely different symbol altogether (and one …

Your title says something else than "infinity times zero". It says "infinity to the zeroth power". It is also an indefinite form because $$\infty^0 = \exp (0\log \infty) $$ but $\log\infty=\infty$, so the …

Jun 13, 2020 · Is there a formal proof for $(-1) \\times (-1) = 1$? It's a fundamental formula not only in arithmetic but also in the whole of math. Is there a proof for it or is it just assumed?

How do I use *ngFor to repeat a HTML element multiple times? For eg: If I have a member variable assigned to 20. How do I use the *ngFor directive to make a div repeat 20 times?

However, convergence is limited, so I iterated starting with z=I, z=I^z 20 times, before using the Schroder function of z-fixedpt. Call this y=schroder (z-fixpt).

Feb 17, 2022 · I am attempting to use regex to match a pattern where we have some X (any character) which occurs exactly n many times in succession. I know a little about regex, but …

Someone recently asked me why a negative $\\times$ a negative is positive, and why a negative $\\times$ a positive is negative, etc. I went ahead and gave them a proof by contradiction like …

Feb 12, 2017 · It's a simple question about regular expressions, but I'm not finding the answer. I want to determine whether a number appears in sequence exactly two or four times. What …