Debamalya Dutta

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Questions related from Debamalya Dutta

How to write δ(f(x,y)) in terms of δ function?

I know that δ(f(x))=∑δ(x−xi)/f′(xi). What will be the expression if "f" is a function of two variables, i.e. δ(f(x,y))=?

17 May 2023 6,806 5 View

How to find the limits of integration for a double integral with a delta function?

As it is not possible to show mathematical expressions here I am attaching link to the question. link: https://math.stackexchange.com/q/4700487/1136237 Your expertise in determining and...

16 May 2023 8,877 3 View

How to solve complex matrix differential equation in fortran?

I am seeking to solve a first-order complex matrix differential equation of the form dy/dt=c.H.y, where H is a complex matrix with complex elements, and c is a complex number. Python and cpp offer...

14 May 2023 6,638 4 View

What numerical integration method can solve a integral over a function that depends on a differential equation without an analytic solution?

As it is impossible to use equations here, I am posting the link to my question here. Link: https://math.stackexchange.com/q/4650679/1136237

02 March 2023 9,538 3 View

Is there exists any predefined Observer in Boost odeint for Cpp for all kinds of error handling and warning messages?

Like solve_ivp or odeint in python, which shows warning messages if there arises any discrepancy during runtime, in Boost odint we need to create observer for that. I just want to know is there...

24 February 2023 513 1 View

How to solve complex first order matrix differential equation in c++?

I am absolutely new in c++ programming and facing many problems converting a simple python code in c++. Mainly I am facing four following problems in writing python code in c++. How to write a...

26 January 2023 5,356 5 View

How to prove that two photon transition amplitude is absent in a crystal that obeys inversion symmetry?

In crystals that obey inversion symmetry retain their polarization form in x-->-x, we can prove that even order susceptibilities get canceled. But I want to know if there exists any way that I...

26 July 2022 2,040 4 View