O'Kheiluf! The Rabbinic Struggle with the Contrapositive
Spivak, Amelia
In this book Dr. Amelia Spivak uncovers a type of tannaitic argument that was lost: neither traditional nor academic scholars seem to have known of its existence. The author finds examples scattered across the range of tannaitic literature - including in well-trodden passages - suggesting that such argumentation was widely practiced. Spivak identifies a signaling Hebrew phrase, o'kheiluf, along with accompanying expressions as uniquely tannait...