{"id":"isomorphic-dual-map-bijection","text":"`is_isomorphic` enforces a bijection (not just a function) by maintaining two synchronized dictionaries — `s_to_t` and `t_to_s` — updated atomically for each new character pair.","truth_value":"IN","source":"entries/2026/06/06/isomorphic-strings-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"isomorphic-dual-map-bijection","truth_value":"IN","reason":"premise"}]}}