A Jacobi Elliptic Functions and Integrals

AI Thread Summary
The discussion centers on finding resources that intuitively explain Jacobi Elliptic functions and their geometric interpretations related to ellipses. A web article was shared that connects points on an ellipse to a circle, which may aid in understanding these functions as generalizations of circular trigonometric functions. Participants are also seeking information on hyperbolic functions and their corresponding trigonometric parallels. A request was made for a specific PDF that is no longer accessible, highlighting the need for reliable resources. The Digital Library of Mathematical Functions was recommended as a starting point for information on special functions.
bamajon1974
Messages
22
Reaction score
5
Are there any useful references or resources that intuitively show how Jacobi Elliptic functions [sn, cn, dn, etc] are geometrically interpreted from properties of ellipses? And how the Jacobi Elliptic functions and integrals can be shown to be generalizations of circular trig functions? Thanks!
 
Mathematics news on Phys.org
The first place I always look for info on special functions is the Digital Library of Mathematical Functions
https://dlmf.nist.gov/
It might not have everything you are looking for, but it does have some of it. Have you looked there?

Jason
 
  • Like
Likes DrClaude and BvU
Seemingly by some mathematical coincidence, a hexagon of sides 2,2,7,7, 11, and 11 can be inscribed in a circle of radius 7. The other day I saw a math problem on line, which they said came from a Polish Olympiad, where you compute the length x of the 3rd side which is the same as the radius, so that the sides of length 2,x, and 11 are inscribed on the arc of a semi-circle. The law of cosines applied twice gives the answer for x of exactly 7, but the arithmetic is so complex that the...
Is it possible to arrange six pencils such that each one touches the other five? If so, how? This is an adaption of a Martin Gardner puzzle only I changed it from cigarettes to pencils and left out the clues because PF folks don’t need clues. From the book “My Best Mathematical and Logic Puzzles”. Dover, 1994.
Thread 'Imaginary Pythagoras'
I posted this in the Lame Math thread, but it's got me thinking. Is there any validity to this? Or is it really just a mathematical trick? Naively, I see that i2 + plus 12 does equal zero2. But does this have a meaning? I know one can treat the imaginary number line as just another axis like the reals, but does that mean this does represent a triangle in the complex plane with a hypotenuse of length zero? Ibix offered a rendering of the diagram using what I assume is matrix* notation...
Back
Top