Exponential and logarithmic functions are mathematical concepts with wide-ranging applications. Exponential functions are commonly used to model phenomena such as population growth, the spread of ...

This paper provides a numerical technique for determining the parameters in a model expressible as the sum of exponentials. The essence of the method is to rewrite the model so that after ...

In the general case the quadratic forms Qk determine many-electron functions formed from correlated electron orbitals of ellipsoidal symmetry and with variable centres. The results are easily extended ...