🌐EnglishEnglishDeutschFrançaisPortuguêsРусскийالعربيةفارسی中文日本語EntityQ1328722· pop 11· linked from 22 articlessine and cosine transformsvariant Fourier transformsAvailable in 11 languagesFrançaisDeutsch中文日本語РусскийPortuguêsالعربيةCatalanEsperantoConnectionseven and odd functionsEntitysine waveEntityCategoriesFourier analysisIntegral transformsMathematical physics