2 commits

Author	SHA1	Message	Date
allaun	ecc294e1ff	feat(bawim): sudoku 729-spin encoding + incremental ΔH + 3 solvers ... Adds: - §3: delta_h() — incremental energy change (O(N) per flip, not O(N²)) - §4a: Sudoku encoding — 729 spins with one-hot/row/col/block constraints via build_sudoku_couplings() and build_sudoku_biases(). Clue embedding via bias field (h_clue = -50, h_anti = +10). - §5: Three solvers — greedy_descent, simulated_annealing, oscillating_bath (BAWIM-style acoustic wave modulation of coupling amplitudes) - §5b: Barkhausen stability criterion (loop_gain > 1, phase_shift = 2πn) and thermal stability comparison (BAWIM 780 vs CIM 1.73×10^7 deg/°C) - §7: evaluate_sudoku() with violation counting and clue preservation All solvers use incremental ΔH instead of full Hamiltonian recompute. All arithmetic is exact Fraction. Float only at the SA acceptance boundary (exp(-ΔH/T) comparison against random draw).	2026-07-07 09:42:38 -05:00
allaun	cdc7d24464	feat(python): BAWIM mutation engine — exact Fraction mutation loop ... Sketch of a mutation engine for the Bulk Acoustic Wave Ising Machine (arXiv 2607.02112). Architecture: §1 Mutable parameter budget (n_spins, J_bits, feedback %, encoding) §2 Core BAWIM equations as exact Fraction arithmetic (Eq 1-5) §3 Spin configuration (random + flip) §4 Coupling matrix generators (MAX-CUT, NPP) §5 Greedy descent solver (swap target) §6 Mutation operators (one param per round) §7 Evaluation (MAX-CUT, NPP) §8 Mutation engine loop with SA acceptance §9 CLI No float in compute path. Quantize to Q16_16 at output boundary only.	2026-07-07 09:35:44 -05:00