Mechanical snail
Reputation
Top tag
Next privilege 250 Rep.
10
Impact
~9k people reached

# 43 Actions

 Sep24 awarded Autobiographer Apr8 comment Visually deceptive “proofs” which are mathematically wrong On my screen it looks obvious that GH as drawn is not perpendicular to AE. Maybe if you rotate the entire diagram counterclockwise by ~1 degree, so that AD and AE are both slightly angled, it would obscure this and make it more convincing. Mar30 awarded Quorum Mar7 comment What happens if I toss a coin with decreasing probability to get a head? I think the products should start from 1. Apr22 revised Prove the sample variance is an unbiased estimator fix LaTeX formatting; add tag Apr22 suggested approved edit on Prove the sample variance is an unbiased estimator Feb4 answered When log is written without a base, is the equation normally referring to log base 10 or natural log? Feb4 comment When log is written without a base, is the equation normally referring to log base 10 or natural log? @wim Yes. That's the ISO 31-11 standard (lb for base 2, ln for $e$, lg for 10). Nov28 comment Is there a uniform distribution over the real line? Related question: Is it possible or useful to define a uniform distribution on the integers or the real line, by permitting infinitesimal probabilities/probability densities? Nov28 comment mean of an arbitrary distribution @shaikh: Yes. For example, the center of mass of a line segment lies on its boundary. Nov28 revised What makes elementary functions elementary? Add more tags; minor punctuation Nov28 suggested approved edit on What makes elementary functions elementary? Nov27 comment Useful examples of pathological functions Also related: mathoverflow.net/questions/16829/… Nov27 comment Useful examples of pathological functions +1 for the last comment. Nov27 awarded Commentator Nov27 comment “L'Hôpital's rule” vs. “L'Hospital's rule”? Any reason the 1716 book spells "Leibniz" as "Leibnis"? And the 1768 one spells it "Leibnitz"! Nov26 comment Alternative notation for exponents, logs and roots? I like this, because it's pretty much standard math notation. Nov25 comment Is there a procedure to determine whether a given number is a root of unity? See also mathematica.stackexchange.com/questions/8998/… for how Mathematica implements it. Sep22 comment Is the statement $A \in A$ true or false? Well technically, proper subset. Sep22 revised Is the square root of -1 rational? more tags; add the image itself