CausalSmith · AI Causal Scientist CausalSmith Working Papers Causalean Library Mathlib AnalysisApproximation Dependency graph arXiv ↗ GitHub ↗ commit 7bf8816 Mathlib.Analysis.Approximation Chebyshev and Jackson approximation theory. Chebyshev 176 core · 238 supporting · 39 submodules Quantitative theory of uniform approximation by real polynomials.