William of Sherwood

English logician

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July 15, 2026

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William of Sherwood was an English logician active around the mid-13th century. He is noted for his work Introductiones in logicam (Introduction to Logic), which was a summary of logical topics intended as a textbook. Sherwood was one of the important "summulists" of his time, a group of scholars who produced comprehensive summaries of logic, encompassing both older and newer developments in the field. His work contributed to the body of medieval logic, which focused on concepts, principles, and systems of logical argumentation.123

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history of logic
Developments in the 13th and early 14th centuries
…1253 and 1257; and (3) William of Sherwood, who produced Introductiones in logicam (Introduction to Logic) and other logical works sometime about the mid-century.
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…1253 and 1257; and (3) William of Sherwood, who produced Introductiones in logicam (Introduction to Logic) and other logical works sometime about the mid-century.
Read More