Reputation
4,879
Top tag
Next privilege 5,000 Rep.
Approve tag wiki edits
Badges
19 42
Newest
 Talkative
Impact
~264k people reached

Jan
3
comment Reference to an atlas of curves and surfaces?
@bubba oh, yes, I get that. The point of asking for an atlas is to collect all the equations and their properties in one place so that one might more easily do as you suggest.
Jan
3
comment Reference to an atlas of curves and surfaces?
@bubba sure but from where? Where do you get the 3D printer designs?
Jan
2
asked Reference to an atlas of curves and surfaces?
Dec
28
comment Factorial and exponential dual identities
Nice! Can you relate this theorem to the ordinary and exponential generating function in my comments to the OP: $g(x)=\int_0^{\infty} e^{−u}G(xu) du$? Also, can you give any meaning/interpretation to the master theorem here?
Dec
20
reviewed Approve Characteristic function of a standard normal random variable
Dec
11
comment Determining the number of zeros in the upper half plane
If only there were an easy way to visualize complex functions. It's basically like having to see 4-dimensions, where 2 are the independent variable and another 2 dependent. Sadly hand graphing calculators won't do it. (computer algebra packages might help). I'm only suggesting this as visualization, not analytic solution for the exact answers.
Dec
4
accepted History of dot product and cosine
Dec
4
accepted Coordinates and distance in higher dimensional spherical and hyperbolic space
Dec
4
accepted Where does binary arithmetic/manipulation enter the mathematics/engineering curriculum?
Dec
4
reviewed Approve How do I simplify $\sqrt{3}(\cot 70^\circ + 4 \cos 70^\circ )$?
Dec
4
reviewed Approve Solve for x : If $( 1 + \tan x ) ( 1 - \tan x ) ( \sec^ 2 x ) + 2 ^ { \tan^ 2 x } = 0$
Dec
4
reviewed Reject Probability that tossing two dice results in two different even numbers
Nov
18
comment Combinatorics Identity about Catalan numbers.
Do you want an algebraic proof or a combinatorial one?
Nov
16
comment Assumptions needed for proof of the Pythagorean Theorem from examples
@DamkerngT The proof of PT via Heron's formula is an interesting alternate proof by nontraditional means. And I am looking for an alternate proof of PT, but very different. I know it seems like a strange thing to look for, a proof using finite examples, because most proofs try to avoid instances.
Nov
15
comment Determinant tridiagonal matrix
How did you get the linear recurrence? (in case the values on the diagonals change)
Nov
15
comment Where to learn how numbers work?
@A.P. Thanks for the edits. Yes I was aware of the reading difficulty. I don't know how a screen reader really works, but at least the LaTeX itself is fairly readable (which is close to how I would write it without screen formatting without LaTeX.
Nov
15
revised Where to learn how numbers work?
added note about binary
Nov
15
reviewed Approve A variation of Borel Cantelli Lemma
Nov
15
answered Where to learn how numbers work?
Nov
15
comment Where to learn how numbers work?
Are you asking about fibonacci or exponentiation or addition or what? fib is just defined that way, there's no justification to be had. The single algorithm you gave for exponentiation by repeated squaring is not obvious but does have a justification. The way you asked the question is too broad "How does it all work?" You need to specify for us to have a reasonable chance to answer.