Robert Recorde

Robert Recorde was a Welsh physician and mathematician. He invented the equals sign (=) and also introduced the pre-existing plus (+) and minus (−) signs to English speakers in 1557.

Summary from Wikipedia (CC BY-SA 4.0) · Dates from Wikidata (CC0)

Who was born first?

• Robert Recorde and Aloysius Lilius were born the same year
• Robert Recorde was born 1 year before Michael Servetus
• Robert Recorde was born 1 year before Erasmus Reinhold
• Robert Recorde was born 1 year after Federico Commandino
• Robert Recorde was born 2 years after Gemma Frisius

Timeline

1. Gemma FrisiusDecember 8, 1508 – May 25, 1555
2. Federico Commandino1509 – September 3, 1575
3. Aloysius Liliuscirca 1510 – circa 1576
4. Robert Recorde (this page)circa 1510 – 1558
5. Erasmus ReinholdOctober 22, 1511 – February 19, 1553
6. Michael ServetusSeptember 29, 1511 – October 27, 1553

Related

• Isaac NewtonDecember 25, 1642 – March 20, 1727
• Johann Wolfgang von GoetheAugust 28, 1749 – March 22, 1832
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• Marie CurieNovember 7, 1867 – July 4, 1934
• Nicolaus CopernicusFebruary 19, 1473 – May 24, 1543
• Louis PasteurDecember 27, 1822 – September 28, 1895
• Gottfried Wilhelm LeibnizJune 21, 1646 – November 14, 1716