Isaac Barrow
1630 CE–1677 CE · London
Isaac Barrow (October 1630 – 4 May 1677) was an English Christian theologian and mathematician who is generally given credit for his early role in the development of infinitesimal calculus; in particular, for a proof of the fundamental theorem of calculus. His work centered on the properties of the tangent; Barrow was the first to calculate the tangents of the kappa curve. He is also notable for being the inaugural holder of the prestigious Lucasian Professorship of Mathematics at the University of Cambridge, a post later held by his student, Isaac Newton.
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LondonלונדוןEngland
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About London
# London From the Norman Conquest onward, London was the beating heart of Christian England, yet by the late eleventh century it harbored a thriving Jewish community whose scholars would shape medieval European Judaism. The city itself—crowded, bustling, hemmed by the Thames and ancient Roman walls—belonged to the Christian kings of England, though Jews enjoyed periods of relative protection punctuated by expulsion and danger. The medieval London Jewish quarter near the Old Jewry was compact but learned, home to wealthy merchants and scribes whose expertise in biblical commentary and halakhic reasoning attracted students from across Christendom; the great theologians and exegetes who worked here produced manuscripts that circulated throughout the Jewish world. By the early modern period, after the expulsion of 1290 and a long absence, Jews quietly returned—first as crypto-residents, then openly from the seventeenth century onward—and London became a cosmopolitan center where Sephardic and Ashkenazi traditions mingled. In the modern era, particularly the nineteenth and twentieth centuries, the city transformed into one of world Jewry's foremost centers of learning and culture, its yeshivas and scholarly institutions drawing seekers of Torah from every continent. The fog-wrapped medieval lanes gave way to Victorian neighborhoods and twentieth-century suburbs, yet London's Jewish intellectual legacy—forged in manuscript and amplified in print—endures as a testament to centuries of resilience and creative thinking.
In London at the same time
Thomas Sydenham, Robert Boyle, Christopher Wren, Robert Hooke, Isaac Newton, Gottfried Wilhelm Leibniz
Across the traditions, in London at the same time
In the same place & time
Sages whose lives overlapped with Isaac Barrow’s in the same cities, drawn from their recorded journeys.
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