MathHistory1a: Pythagoras' theorem

[pppppvideo]

Nice lecture. Sir kindly make a playlist of Lectures about Group Theory. I hope you will elaborate it very nicely as you did previously. Kindly oblige the matter!!!

Fiaz (Pakistan)

[MarleyNicholeTravis]

This should be taught as a requirement for any mathematically centric degree.Im a Mechanical Engineering student and my brain is well suited for math,& I feel its very important to understand the principles & reasoning behind the math, rather than just being able to follow predefined rules and systems.If you understand the context, reasoning, and principles involved I feel it exponentially expands your critical thinking ability.Math is the base for so many fields & the context is never pushed?

[MrTelaviv123]

But the greeks didnot use the Hindu number system. Their symbols for number was quiet different eg, aplha, phi , epsilon etc.

[dannyll15]

your lecture just inspired me to learn im going to go get ahead in my math class and my physics class.

[Nooreazy]

i like this lecture thx.

[Nooreazy]

Y U NO MENTION al khwarizmi?

[hotamali]

and the corresponding technical aspect that those ideas.... Uhm......

[slashhashdash]

I like when he is moving while he is writing like moonwalking :D

[oker59]

I've already read the entire book(and bought all the other Stillwell books; i've also read all the E.T. Bell and Morris Kline books); i was just hoping to watch something interesting . . . since there's nothing else interesting on t.v. or even youtube(except for Jam es Bur

[oker59]

@oker59 . . . except James Burke Connections videos. Reading books is always more interesting. Unfortunately, this video needs to be redone!

[oker59]

quadratic equations were before the pythagorean theorem.

[kedens01]

Thank-you so much for sharing these lectures on YouTube. I always had such a hard time with math when I was young because I didn't understand why we were doing things like FOIL (First Outer Inner Last) etc. I didn't have a frame for the information. When I began studying the history of math it all finally began to make sense. I just can't understand why math books (unlike books on other subjects) leave out a meaningful analysis and commentary about the material being covered.

[einsteinino]

Good lecture; too bad the camera continually goes out of focus.

[gregg4]

Great lecture but it has a mistake though.

He writes the year zero on the blackboard. There was no year zero.

European mathematicians using roman numerals started counting at one.

There is no zero in roman numerals. So there was 1 AD (or CE) and the year before that was 1 BC (or BCE).

[njwildberger]

Hi gregg4, Thanks for the comment. I do not think it is a major point, but I feel I must disagree with you. There might not have been a year zero in Roman times (in fact clearly the system only started some time after Jesus' death) but this is now 2011 and these days there is a year zero by convention; or at least there ought to be. A question: how many years between 20 B.C and 30 A.D? If someones dates are these, how long did they live? Surely any reasonable system has the answer as 50 years.

[hariveerakumar150590]

@gregg4 fuck you

[gregg4]

@hariveerakumar150590

Thanks for your very thoughtful answer.



[hariveerakumar150590]

@gregg4 no worries mate.

[Waranle]

Thank you!