
Geometry Geometry Math Forum 
 LinkBack  Thread Tools  Display Modes 
May 5th, 2015, 06:52 AM  #1 
Newbie Joined: May 2015 From: Bangladesh Posts: 3 Thanks: 0  Is this Njwildberger guy (in YouTube) any good?
I just wanted to learn some hyperbolic geometry by myself. And I found this YouTube channel which has many lectures on many different math topics: https://www.youtube.com/user/njwildberger Has anyone tried his lectures before? Is he any good? 
May 5th, 2015, 07:10 AM  #2 
Global Moderator Joined: Nov 2006 From: UTC 5 Posts: 16,046 Thanks: 937 Math Focus: Number theory, computational mathematics, combinatorics, FOM, symbolic logic, TCS, algorithms 
He's knowledgeable and the math he teaches is correct. His preferred approach, rational trigonometry, is not used by any other people as far as I know, so it may make it a bit harder for you to learn from other texts or people in the future.

May 5th, 2015, 07:48 AM  #3 
Newbie Joined: May 2015 From: Bangladesh Posts: 3 Thanks: 0  I don't know what rational trigonometry is. Does he use it in his lectures on hyperbolic geometry?

May 5th, 2015, 08:33 AM  #4 
Global Moderator Joined: Nov 2006 From: UTC 5 Posts: 16,046 Thanks: 937 Math Focus: Number theory, computational mathematics, combinatorics, FOM, symbolic logic, TCS, algorithms  In summary, using squared distances ("quadrances") instead of distances, squared sine ("spread") in place of sine or other trig functions, and using only rational numbers and constructive methods. Almost certainly. 
May 5th, 2015, 10:01 AM  #5 
Global Moderator Joined: Dec 2006 Posts: 18,844 Thanks: 1566  
May 5th, 2015, 12:56 PM  #6  
Newbie Joined: May 2015 From: Bangladesh Posts: 3 Thanks: 0  Quote:
Can anyone suggest any other sources for learning hyperbolic geometry?  
May 5th, 2015, 01:10 PM  #7 
Global Moderator Joined: Nov 2006 From: UTC 5 Posts: 16,046 Thanks: 937 Math Focus: Number theory, computational mathematics, combinatorics, FOM, symbolic logic, TCS, algorithms  

Tags 
good, guy, njwildberger, youtube 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
New YouTube Channel for Stats Help  Ingersoll  Advanced Statistics  0  January 6th, 2014 11:04 PM 
YouTube  mrtamborineman10  New Users  8  February 4th, 2011 04:04 AM 
Youtube video lectures  iclestu  Real Analysis  0  January 14th, 2011 01:59 AM 