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Questions tagged [18th-century]

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18 votes
2 answers
2k views

Was 18th century algebra more symbolic/formal than the modern conception?

I've found Lagrange's Sur la résolution des équations algébriques to be a very confusing and difficult read, and I think I'm starting to see why: it seems that Lagrange thinks of algebra in a much ...
Jack M's user avatar
  • 3,149
2 votes
1 answer
172 views

Who introduced velocity potential?

Wikipedia cites John Anderson’s A History of Aerodynamics and says that velocity potential was introduced by Lagrange in 1788. However, I could trace it at least to Euler 1752, where he published his ...
timur's user avatar
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15 votes
1 answer
1k views

Why did 18th century writers think that Mars had 2 satellites?

At least two 18th century writers wrote that Mars has two satellites: Swift in Gulliver's travels (1726) and Voltaire in Micromégas (1752). How did they guess this? Was Voltaire repeating Swift's ...
Alexandre Eremenko's user avatar
1 vote
0 answers
78 views

Complex potential in E227?

I have a reason to believe that Euler introduced the complex potential in his Continuation des recherches sur la theorie du mouvement does fluides, published in 1757. However, I am having hard time ...
timur's user avatar
  • 709