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Aug
3
accepted What's the right way to calculate hyperbolic distance on the hyperboloid model?
Aug
3
accepted Why does the Pythagorean Theorem have its simple form only in Euclidean geometry?
Aug
3
asked On the hyperboloid model, if the point $\mathbf{v}$ gets translated to the origin, then where does the point $\mathbf{x}$ go?
Aug
3
reviewed Approve Convergence of Sequence
Aug
3
reviewed Approve proof of number of prime factors of $n$
Aug
3
reviewed Approve A balloon rises at a certain rate (in body), What is velocity of balloon after 40 seconds?
Jul
30
reviewed Approve change of complex variables
Jul
28
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?