Matematika Diskret: Sebuah Pengantar Terbuka — Edisi Keempat, Bahasa Indonesia Copyright 2013–2025 Oscar Levin. Indonesian translation and adaptation, 2026. The book text and this Indonesian translation/adaptation are licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (CC BY-NC-SA 4.0): https://creativecommons.org/licenses/by-nc-sa/4.0/ Attribution must identify Oscar Levin and the English fourth edition. Changes must be identified. No endorsement by Oscar Levin or the University of Northern Colorado is implied. WeBWorK Open Problem Library components retain their own component notices; unless otherwise indicated, those components are licensed CC BY-NC-SA 3.0. See THIRD_PARTY_NOTICES.md and the provenance package for exact source paths, authority hashes, and notices. The frozen upstream repository also contains stale root-level BY-SA 4.0 text. The active fourth-edition book front matter and official fourth-edition reader state CC BY-NC-SA 4.0; this edition follows that active work-level notice and preserves the discrepancy in its provenance.