ssmit1986/lazylists

Lazy Lists package for Wolfram Language

lazylists's Issues

Crashes large symbolic Wick contraction/ gaussian integration .

Thank you for this very nice code with a very nice documentation.

Short version: The kernel crashes when using intensive computations with Map and a recursive function.

Further details:

I tried using this in a symbolic calculation where I compute Wick contractions or in other words compute correlations of random variables with a Gaussian distribution.

The multivariate random distribution has a symbolic covariance matrix A[i,j].

I split a sum of 10 terms into a list of sums of 2 or 3 terms. Each sum is averaged over by multivariate Gaussian integration with a symbolic matrix covariance matrix.

A given term can involve a product of 14 random variables which can require significant computation but it works quickly (like around 3 seconds) when using normal lists on this small example.

If I use the lazyLists here rather than regular lists Mathematica crashes.

If needed I can provide the code for the Gaussian integration and the test example but the code for the Gaussian integration adapted to my notation choices is rather lengthy.