Rabbi Nahum Eliezer Rabinovitch (Hebrew: נחום אליעזר רבינוביץ'; born 1928) is an Israeli Orthodox rabbi and posek, and head of Yeshivat Birkat Moshe in Ma'ale Adumim. He was born in Montreal, Canada. His late daughter was Dina Rabinovitch (1963–2007).
Rabinovitch began studying with Rabbi Pinchas Hirschsprung at age 14. At age 20, he studied in Yeshivas Ner Israel, Baltimore, where he received Semicha from Rabbi Yaakov Yitzchok Ruderman. He also obtained a master's degree in mathematics from Johns Hopkins University. He later completed a Ph.D. in Philosophy of Science at the University of Toronto.
In 1951, Rabinovitch married Rachel Malka Shuchatowitz, a niece of Rabbi Ruderman.
Rabinovitch taught Judaism in several places and served as a congregational rabbi: between 1952 - 1963, he was the rabbi of the Jewish community in Charleston, South Carolina. In 1963 he was called to serve as a community rabbi in Toronto. In the 1970s, he completed a Ph.D. in the field of statistics and probability in the Talmud at the University of Toronto; the results are in his book, which is highly cited: "Probability and Statistical Inference in ancient and medieval Jewish Literature" (Toronto, 1973). This topic was also explored by Australian Professor of Mathematics, Michael Hasofer. At that time he also gave lectures at the university and was an editor of the Rabbinical Council of America's journal "Hadarom".
Rabinovitch also lived in London (1971–1982), where he served as dean of Jews' College and had a reputation as an influential scholar. He later agreed to be a head of Yeshivat Birkat Moshe in Ma'ale Adumim, Judea and Samaria, a Hesder institution.
Rabinovitch is an authority on Maimonides; he has published scientific, theological, and halachic books and essays on Maimonides' writings. His philosophical approach is influenced by Maimonides' rationalism. It emphasizes the connection between philosophy and halacha, between Torah and scientific studies, and between theoretical learning and practical application in life.
In a recent interview, Rabinovitch said that he backed religious studies for women, and did not see a problem in Halachic decisions taken by women. Jewish law has always spoken of monarchy as an ideal, but Rabinovitch said that it might not be dictatorial, and drew a picture of constitutional society, where the law is above everything else.
- Yad Peshuta (יד פשוטה) Commentary on Maimonides' halachic book "Mishne Torah" - 14 volumes.
- Melumdei Milchama (מלומדי מלחמה) - Responsa on halachic questions about military service
- Darkah shel Torah (דרכה של תורה) - halakhic-philosophical actual essays
- Hadar Itamar (הדר איתמר) - Finis on the Talmud
- Iyunim be-Mishnato shel ha-Rambam (עיונים במשנתו של הרמב"ם)
- Siach Nachum (שיח נחום) - Responsa on halachic questions
- Mesilot Bilvavam (מסילות בלבבם)- Halakhic-philosophical essays on Society and Statehood (expansion of Darkha shel Torah)
- Rabbi Hasdai Crescas (1340–1410) on Numerical Infinities - Isis, Vol. 61, No. 2 (Summer, 1970), pp. 224–230
- Studies in the History of Probability and Statistics. XXII: Probability in the Talmud - Biometrika, Vol. 56, No. 2 (Aug., 1969), pp. 437–441
- Torah and Science: Conflict or Complement - Challenge: Torah Views on Science and its Problems, Feldheim Publishers pp. 44
- Torah and the Spirit of Free Enquiry - Challenge: Torah Views on Science and its Problems, Feldheim Publishers pp. 54
- The one and the many: Early stochastic reasoning in philosophy - Annals of Science, Volume 34, Issue 4 July 1977, pp. 331 – 344
- Early antecedents of error theory - Archive for History of Exact Sciences, Volume 13, Number 4 / December, 1974 pp. 348–358
- Halachah and Technology - Proceedings of the Associations of Orthodox Jewish Scientists, Volume 2 (1969) pp. 129–149
- All Jews Are Responsible for One Another - Jewish Tradition and the Nontraditional Jew. Ed. Jacob J. Schacter. Northvale, NJ.: Aronson, 1992 pp. 177–204
- Probability and statistical inference in ancient and medieval Jewish literature - University of Toronto Press, 1973
- Rabbi Levi ben Gershom and the origins of mathematical induction - Archive for History of Exact Sciences, num.6, pp. 237–248, 1970
- The Way of Torah- The Edah Journal Vol 3 Issue 1
- What is “Emunat Ḥakhamim”?- Hakirah: The Flatbush Journal of Jewish Law and Thought Vol 5
- "In first, Israeli judge recognizes conversion to Judaism by private court". 13 September 2018.
Convert 'Katya' and her daughter sit before the independent Giyur K'halacha conversion court, led by Rabbi Nahum Rabinovitch (center) on August 10, 2015. Giyur K’halacha’s rabbinical courts, which follow the precepts of Jewish law, were founded by Farber along with many of Modern Orthodoxy’s biggest names — Efrat’s Rabbi Shlomo Riskin; Rabbi Nachum Rabinovitch from Ma’ale Adumim
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