Gianluca Argentini

7 Questions 116 Answers 0 Followers

Questions related from Gianluca Argentini

Which are the simple and nice proofs of Sturm-Hurwitz Theorem about zeros of periodic functions?

Let f be a real continuous 2Pi (= 2 x 3.14...) -periodic function with Fourier series having null all the harmonic components of order < N. The Sturm-Hurwitz Theorem states that f has at least 2N...

16 November 2017 4,866 1 View

Are there some useful syntethic fuels?

What is the state of art about synthetic fuels, liquid or gaseous? Are there yet some examples of use for flame/combustion process? Gianluca

15 November 2017 8,651 3 View

What are the more important applications of mathematical Minimal Surfaces to Sciences or real world?

As minimal surface we can consider a surface (in R3 or Rn or Cn, where C = complex field) with zero mean curvature. What are the most useful applications to scientific disciplines or technical...

10 November 2017 8,108 8 View

Are there physical applications of Banach-Tarski Paradox?

Banach-Tarski Theorem (also known as Paradox) is a mathematical statement which says that a sphere can be splitted into two (or an integer N...) spheres each equal to the original one. Do you know...

31 October 2017 9,486 2 View

What is the state of art regarding Navier-Stokes?

Which is the status of mathematical research about existence and unicity for Navier-Stokes equations (and boundary problems) for finite or infinite domains? Gianluca

18 October 2017 1,743 3 View

There is a general analytic expression of solutions for generalized Tricomi PDE?

In a 2010 paper Construction of classic exact solutions for Tricomi equation I have proposed a method for generalized Tricomi pde uxx + a(x)uyy = 0 construction of analytical solutions. But there...

11 October 2017 8,523 4 View

What is the applicability of Newton Sine-Squared Law?

Applicability on the range of fluid dynamics for bodies moving in a fluid such air, Re about 103. Thanks. Gianluca

19 September 2017 4,564 4 View