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13h
reviewed Approve Finding all real numbers x such that $x \lceil x \lceil x \lceil x \rceil \rceil \rceil = 88$
Jul
26
reviewed Approve Trigonometric equation cos sin and power
Jul
26
comment Why does the Pythagorean Theorem have its simple form only in Euclidean geometry?
I quite like this explanation. I wish I could give another +1 for teaching me that $\cos(ix) = \cosh(x)$; that's a very intriguing and fascinating link between the elliptical and hyperbolic geometries.
Jul
26
reviewed Approve I have a 8 DIP Switches on a device. How many combinations and permutations are there?
Jul
26
asked Why does the Pythagorean Theorem have its simple form only in Euclidean geometry?
Jul
21
answered What's the right way to calculate hyperbolic distance on the hyperboloid model?
Jul
21
asked What's the right way to calculate hyperbolic distance on the hyperboloid model?
Jun
21
reviewed Approve Shortcut Technique for finding Raised Binomials with Imaginary Numbers
Jun
14
awarded  Self-Learner
May
31
reviewed Approve SAT math problem about probability
May
31
reviewed Approve Roots of the equation $x^2 + px + q = 0$
May
31
reviewed Approve Is there a set $A$ such that power set of $A $ has a bijection with $\mathbb{N}$?
May
31
reviewed Approve How to write a line as the sum of a vector and a subspace?
May
28
accepted When (and why) did the convention that exponents are evaluated from right to left arise?
May
21
reviewed Approve problem about symmetric positive semi-definite matrix
May
5
awarded  Yearling
Apr
27
reviewed Approve Curious about a made-up paradox
Apr
26
comment What is this pattern called?
I love that you posted this! I stumbled across this same pattern years ago but didn't think to ask about it online. (Then again, that might have been before I knew about Math.SE.) So, thanks for doing this! :)
Apr
16
asked When (and why) did the convention that exponents are evaluated from right to left arise?
Apr
10
reviewed Approve Solve for X in a difficult exponential function