Polish physician and Talmudist of the eighteenth century. He was the author of: "Meleket Maḥashebet," part , "Ir Ḥeshbon" (Frankfort-on-the-Main, 1765), on arithmetic and algebra; part , "Berure ha-Middot" (Berlin, 1765), on geometry; "Ma'aneh Eliyahu" (Zolkiev, 1758), discussions on the Talmudic treatises Beẓah and Baba Meẓi'a, together with some rabbinical decisions and responsa; "Nibḥar me-Ḥaruẓ" (1772), extracts from the book "Ha-'Iḳḳarim," reproduced in an easy style and in the form of a dialogue between teacher and pupil; "Hadrat Eliyahu" (part , Prague, 1786), homiletics; "She'elot u-Teshubot Ge'one Batra'e" (Sudilkov, 1795), collected from the responsa of the later rabbis.