Experience

Added type annotations to sympy.utilities.exceptions, covering SymPyDeprecationWarning, sympy_deprecation_warning, and ignore_warnings. The patch uses a TYPE_CHECKING guard to keep collections.abc out of the runtime import path. Reviewed and merged into sympy:master by maintainer @oscarbenjamin. Part of the broader typing effort tracked in Issue #28806.

A full-factorial experiment in the Public Goods Game shows that information regime and incentive strength explain 85.8% of cooperation-rate variance; algorithm choice accounts for just 3.8%. Agents with the least information cooperate most (83% vs 42% under full observation), attributable to state-space compression. TreeSHAP and Shapley-variance decomposition confirm information structure, not algorithm selection is the primary design lever for cooperation.

Studies optimal trade execution strategies that incorporate predictive alpha signals, bridging market microstructure theory with practical quantitative trading. Preprint available on SSRN.