A (very) Brief History of Augustin-Louis Cauchy

NOTE: The intro screen says Lagrange, but this is indeed Cauchy!

In this episode, we cover the history of Augustin-Louis Cauchy, a 19th century French mathematician, engineer, and physicist who was notable for developing a great majority of the foundations of complex analysis, and is only second to Euler in terms of mathematical productivity.

I go a bit deeper into the mathematics in this video, but still the primary focus is on Cauchy's history.

Sources:

-- TIMESTAMPS --
0:00 Intro screen (SHOULD BE CAUCHY)
0:10 Intro
0:44 Early Life
4:40 Engineering
6:26 Research on Leave
8:10 1814 Paper - Complex Analysis
10:41 Bourbon Rule
14:03 Exile
16:30 Strained Relations
19:33 Out of Exile / Death / Fin

[chanellioos]

Picture Cauchy at a party, standing by the punch bowl. Instead of mingling, he's carefully analyzing the circular rim of the bowl. When someone asks him what he's doing, he replies, "Just making sure the punch is analytic within and on this curve. Wouldn’t want any non-zero residues floating around in there!"

Later, when someone spikes the punch, Cauchy immediately notices. "Aha!" he exclaims, "A pole of order one! I knew something was off—this drink just became a bit more singular."

[zaidzitouni]

Learning about the history of mathematics/mathematicians makes the study of mathematical theories much more interesting ! Great video by the way.

[flyingsnowball]

Discovered your channel through the Euler video. Been on a binge since. Loving your videos!

[pabloa]

I just learned the Cauchy-Euler equation in Diff-EQ and had no idea who this dude was. Thank you for your help

[windingsarcasm]

Your pronounciations of French names is soo soothing

[emanuellandeholm]

Cauchy was truly a giant. So much of the technology we take for granted now ultimately depends on insights made by Cauchy. Laplace, Fourier, Hilbert etc. It's all derivative, and/or Cauchy made it rigorous. And it all started with Euler, Leibniz and Newton.

[quagsiremcgee]

Just finished my first complex analysis course. wanted to know who found all of these symmetries I've been calculating. Great video.

[franciscorosalbarran]

Thank you Andrew!!
I just knew Cauchy from the Cauchy convergence of a serie. He actually did many things. Love those videos
Can you do one about Hermann Schwarz? 🙏
PD: I think the title at the beginning of the video mentions Lagrange?

[JohnBerry-qh]

Can you imagine that? Back in the Age of Monarchs, the various monarchs "fought" over noteworthy members of academia, and would "lay down a red carpet" to entice them to teach in the monarch's own country.

[yeonil]

Thank you for the video :))) I notice his name quite often both in my differential and numerical analysis classes… no wonder why 800 research paper 🤯

[emilj]

Your videos are awesome... keep up the good work!!

[thea.igamer]

Excellent. Your efforts are highly appreciable. Indeed, a great distinguished service, here in Youtube. There are lot of interesting mathematicians on the list. Consider Hermann Grassmann, George Boole, Stefan Banach etc.

[rabad]

is says Lagrange in the title, but then at 0:38 its Putin?

[raidasrimkus]

A really nice video! Please keep it up!

[pal]

This is great. You got yourself a new subscriber

[morgengabe]

I imagine Cauchy just didn't want to argue with Abel and didn't feel inclined to hold any punches that weren't made in the interest of reason. These people came up with limits, they were not wreckless/unscrupulous. Overly cautious, perhaps.

[Thedarkdeepspace]

How the views on others will be nice after this much difficult(comment on 17:15)

[TheDJSyaheer]

When the world needed him most, he returned

[JohnBerry-qh]

You omitted mentioning the *Cauchy Mean Value theorem.*

[JohnBerry-qh]

*Meanwhile, over in America...*
From 1775 to 1867, you could count the number of significant mathematicians, residing in America, on half of one hand.