What is the meaning of writting a comment on a published paper ?

When one writes a comment on a published paper , what is actually the intention of the commenting author ? To point out the mistakes or present complete solution . It is seen that very often...

01 February 2019 6,761 4 View

Can any one suggest how to calculate C when the Hamiltonian neither P nor T invariant ?

[H,P]=/=0;[H,T]=/=0;[H,PT]=/=0; then how to calculate C ? If one take C=0,this implies only zero charge particles exist for this type of H .Mathematically [H, CPT]=0. Or one can tell that...

31 December 2018 8,904 0 View

Why CPT is not a universal symmetry in non- relativistic quantum mechanics ?

In many cases non- relativistic operator even though reflect CPT invariance nature unlikely to reproduce complete real spectra. Is it true ? If so when ? If no when ? Your opinion will be highly...

31 December 2018 462 0 View

How to calculate charge operator for a 3x3 complex mayrix ?

Please suggest matrix method for calculating charge conjugation operator. Suppose one desires to apply matrix to study K^0; K^+;K^- . Then how to proceed .

11 December 2018 4,693 0 View

Do you accept parity violation in Quantum Mechanics ?

In my understanding parity is violated in many hermitian operators with susy or without susy . Interestingly hermitian matrix also comes under this P =/= P^-1

09 October 2018 7,523 0 View

How many + and - ve charges in a C(conjugate operator) ?

08 September 2018 603 0 View

Can I have two charge conjugate matrix for given complex matrix reflecting real eigenvalues ?

08 September 2018 2,381 0 View

No title

08 September 2018 8,205 0 View

Why product of two matrices are non-commutative in nature.?

07 August 2018 9,564 4 View

Can you suggest an application on matrix eigenvalue method to Economics or Business ?

Please suggest a suitable problem in Economics or Business where one can apply matrix eigenvalue method ? Give details. B.Rath

07 August 2018 2,805 1 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

What are the application of Fixed points thoery in Chemistry.?

It is said that fixed point theory has lot of applications not in the field of mathematics only but also in various areas. So I am looking for applications in Chemistry only..

26 February 2021 3,533 1 View

Can I ask did any good platform or journals for learning the calcluation on the reference governors and command governor?

Recently I face some problems with the mathematical ( calculation) on the reference governor and command governor, so I need some help from you all to get which platform or journal can let me...

23 February 2021 7,746 2 View

Special issue on PLS-SEM in Mathematics. Are you interested?

21 February 2021 5,601 3 View

What is the better software for approximation of 3D surface with equations?

I have a massive of x, y, z coordinates of 2D surface in 3D space, which builded in Ansys HFSS or AutoCAD. How can I get the analitical aproximation of this surface by formulas?

21 February 2021 3,444 7 View

How to correctly choose the number of solution intervals when preforming harmonic analysis in ANSYS?

Good day, I design the rail-wheel geometry and the harmonic frequency ranges between 20-10kHz with 500Hz solution intervals and the results makes sense. Most of the time on the related literatures...

19 February 2021 3,190 3 View

How can I obtain a sine function along a path with known equation?

I have a symmetric airfoil with known equation. Now a sine function passes along the airfoil equation like following figure. I want to find the sine function in (x,y) coordinate system.

17 February 2021 1,594 12 View

Does learning mathematics exclusively improve cognitive abilities?

Teaching Mathematics at school to all students is commonly justified by the opinion that it improves their problem-solving skills and "makes them smarter" (whichever measure is implied by this). I...

15 February 2021 7,391 7 View

Can we help fellow mathematicians get free ?

https://terrytao.wordpress.com/2021/02/08/a-statement-from-mathematics-department-faculty-at-stanford-and-mit/ Terry Tao blogged about this unfortunate event. Kindly share among Mathematical...

08 February 2021 1,055 3 View

Theoretical computer virology ? is still alive ?

HI Everyone! I am asking to know by you, expert in cybersecurity and mathematics, if Computer virology (the one of Cohen and Andler) is still an active field of research. That research made in...

08 February 2021 7,613 6 View