Monday, March 03, 2014

Pi and the Diaspora in the Talmud

THE LAST TWO WEEKS OF DAF YOMI COLUMNS BY ADAM KIRSCH IN TABLET: Math Problem for Talmudic Rabbis: Building the Right Size Sukkah. Pi, irrational numbers, and squaring the circle are all brought to bear to find justifications for tradition
For a thousand years, traditional Jewish education was focused on learning the Talmud. But as I’ve often found in reading Daf Yomi, learning the Talmud also requires mastering secular arts and sciences such as mathematics, astronomy, and medicine. In fact, a complex geometry problem came up early in this week’s reading in Tractate Sukka, raising the question: How well did the rabbis know the value of pi?
In practice, they seem to reckon it as three and a bit, which is not too far off. Cross-file under "Asking the Important Questions."

In the Talmud, Jews Losing Touch With the Everyday Words of the Holy Land In staking claims about the validity of Jewish identity, the rabbis show that the Diaspora has existed for nearly as long as Judaism.
At this point, Reish Lakish—who was born in Syria but moved to Palestine as an adult—offers a brief but pointed statement about the relationship between Babylonia and Israel. “Initially, when Torah was forgotten from the Jewish people in Eretz Israel, Ezra ascended from Babylonia and reestablished it,” he explains. When the Torah was “again forgotten, Hillel the Babylonian ascended and reestablished it.” And when the law was forgotten for a third time, in the Tannaic period, “Rabbi Chiyya and his sons ascended and reestablished it.” Reish Lakish goes on to cite the teaching of Chiyya on the question of reed mats.

This little genealogy of Diaspora relations sends a powerful message, reminding us that the question of the Diaspora has existed for nearly as long as Judaism itself. ...
Earlier Daf Yomi columns are noted here and links.