Solomon Judah Löb Rapoport (June 1, 1790 – October 16, 1867) (Hebrew: שלמה יהודה כהן רפאפורט), was a Galician rabbi and Jewish scholar. He was born in Lemberg, Kingdom of Galicia and Lodomeria, Austria. He married the daughter of the famed Ketoz hachosen http://en.wikipedia.org/wiki/Aryeh_Leib_Heller, and was instrumental in publishing the work Avnie Miluim of his father in law. He wrote both the index, sources and numerous comments.
After various experiences in business, Rapoport became successively rabbi of Tarnopol (1837) and of Prague (1840). He was one of the founders of the new Wissenschaft des Judentums movement. His chief work was the first part of an (unfinished) encyclopaedia (Ereklz Millin, 1852). Equally notable were his biographies of Saadia Gaon, Nathan (author of the Arukh), Hai Gaon, Eleazar Kalir and others.
Thrown upon his own resources about 1817, Rapoport became cashier of the meat-tax farmers. He had already given evidence of marked critical ability, though his writings previously published were of a light character—poems and translations. His critical talent, however, soon revealed itself. In 1824 he wrote an article for Bikkure ha-'Ittim on the independent Jewish tribes of Arabia and Abyssinia. Though this article gained him some recognition, a more permanent impression was made by his work on Saadia Gaon and his times (published in the same journal in 1829), the first of a series of biographical works on the medieval Jewish sages. Because of this work he received recognition in the scholarly world and gained many enthusiastic friends, especially S. D. Luzzatto.[1]
After the fashion in rabbinic circles, Rapoport was known by an acronym "Shir", formed by the initial letters of his Hebrew name Shelomo Yehuda Rapoport (Shir literally means "song" in Hebrew)
Solomon Judah Löb Rapoport notes that according to the Masoretes there are ten vowel sounds. He suggests that the passage in the Sefer Yetzirah, which discusses the manipulation of letters in the creation of the world, can be better understood if the Sefirot refer to vowel sounds. He posits that the word sefirah in this case is related to the Hebrew word sippur ("to retell"). His position is based on his belief that most Kabbalistic works written after Sefer Yetzirah (including the Zohar) are forgeries.[2]
Rapoport died in Prague.