https://www.inderscience.com/info/inarticle.php?artid=42934
Article: Face recognition using multi-scale differential invariants in statistical manifold...
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https://arxiv.org/abs/1909.00477
[1909.00477] Differential invariants for a class of diffusion equations
Abstract page for arXiv paper 1909.00477: Differential invariants for a class of diffusion equations
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