An implementation of the Chebfun3F algorithm in Julia.

All credits for the Chebfun3F algorithm go to S. Dolgov, D. Kressner and C. Strössner.
Their paper
The github repository of Chebfun3F
Dolgov, S., Kreßner, D., & Strössner, C. (2021). Functional tucker approximation using Chebyshev interpolation. SIAM Journal on Scientific Computing, 43(3), A2190–A2210. https://doi.org/10.1137/20m1356944