-- Reproduction axiom trail -- re-derived from source (TOOLCHAIN tier). -- theorem : rc_time_constant_def -- source : examples/rc_filter.eml -> eml-compile --target lean (the artifact the zoo ships; NOT a probe) -- tool : forge 8074510 . machlib 1420f96 . lean via lake -- when : 2026-07-02T04:37:24Z -- verdict : CLEAN -- footprint free of sorry- and classical-citation axioms -- (re-derive: make verify-proof) -- MachLib/ReVerify_rc.lean:24:5: warning: unused variable `h1` note: this linter can be disabled with `set_option linter.unusedVariables false` MachLib/ReVerify_rc.lean:25:5: warning: unused variable `h2` note: this linter can be disabled with `set_option linter.unusedVariables false` MachLib/ReVerify_rc.lean:74:5: warning: unused variable `h1` note: this linter can be disabled with `set_option linter.unusedVariables false` MachLib/ReVerify_rc.lean:91:5: warning: unused variable `h1` note: this linter can be disabled with `set_option linter.unusedVariables false` 'rc_time_constant_def' depends on axioms: [propext, MachLib.Real, MachLib.Real.ltR, MachLib.Real.mulR, MachLib.Real.zeroR]