# double dot product

**URL:** <https://community.freefem.org/t/double-dot-product/2795>\
**Category:** General Discussion\
**Created:** [November 13, 2023, 8:21pm UTC](https://community.freefem.org/t/double-dot-product/2795 "2023-11-13T20:21:45Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![m.javad98](https://avatars.discourse-cdn.com/v4/letter/m/4da419/32.png) [@m.javad98](https://community.freefem.org/u/m.javad98)\
**Post date:** [November 13, 2023, 8:21pm UTC](https://community.freefem.org/t/double-dot-product/2795/1 "2023-11-13T20:21:45Z")

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I have two tensors. How do I compute the double dot product of the two tensors in FreeFEM?