🌐日本語EnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsРусский한국어中文日本語EntityQ3044470· pop 15· linked from 96 articles構成的証明method of proof that demonstrates the existence of a mathematical object by creating or providing a method for creating the objectAvailable in 14 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsNederlandssimpleUkrainianConnectionsconstructivismEntityprinciple of excluded middleEntityCategoriesConstructivism (philosophy of mathematics)Mathematical proofs