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Typos in the 2007 Vintage Paperback edition
http://www.roadtoreality.info/viewtopic.php?f=20&t=52
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Author:  Lemaitre [ 03 Apr 2008, 06:06 ]
Post subject:  Typos in the 2007 Vintage Paperback edition

The following typos were found in the 2007 paperback:

Page 138-Line 20 : "unambiguously"
Page 222- Fig.12.5 Line 4 : "Hausdorff"
Page 234- Mobius: the "o" needs an "umlaut"
Page 281- Parag.13.9-Line 16:the[2,0] tensor should be a [0,2] tensor.
Page 360- Line 20: The famous error noted by fallingup as "error in section 16.2"
Page 360 -Line 22 : the indices of the a's should be lower indices.
Page 361- Fig. 16.2 :"Finite-Geometry versions of the theorems of Fig 15.14", instead of 5.14.
Page 1090- "Friedmann- Lamaitre-Robertson-Walker"should be Lemaitre(of course!).
Same page- "Gross, David 679" is misplaced and should be deleted.

Author:  nkbj [ 16 Jun 2008, 03:21 ]
Post subject:  Re: Typos in the 2007 Vintage Paperback edition

Page 1087: "Bohr, Neils" should be "Bohr, Niels".

Author:  azz0 [ 12 Jul 2008, 00:33 ]
Post subject:  Re: Typos in the 2007 Vintage Paperback edition

Page 97
z = log r + i... should be: log z = log r + i...

Author:  vasco [ 12 Jul 2008, 08:11 ]
Post subject:  Re: Typos in the 2007 Vintage Paperback edition

azz0 wrote:
Page 97
z = log r + i... should be: log z = log r + i...


I don't agree with you if you are talking about the page where the full line is

z=\log r+i\theta,

The only way to make this clearer, since Penrose has written w=e^z in the previous paragraph, is to write

z=\log w=\log r+i\theta

In my 2005 edition this is on page 94 section 5.3

Author:  zorba [ 04 Jan 2009, 01:15 ]
Post subject:  Re: Typos in the 2007 Vintage Paperback edition

Page 96, i is missing on both sides of the equation e^(a+b)=(e^a)(e^b)

Author:  vasco [ 04 Jan 2009, 09:03 ]
Post subject:  Re: Typos in the 2007 Vintage Paperback edition

Are you presenting us with a New Year joke?
If not can you explain this in more detail please? It doesn't make sense to me.
zorba wrote:
Page 96, i is missing on both sides of the equation e^(a+b)=(e^a)(e^b)

So what do you think the equation should be when it's corrected?

Author:  zorba [ 28 Jun 2009, 22:37 ]
Post subject:  Re: Typos in the 2007 Vintage Paperback edition

vasco wrote:
Are you presenting us with a New Year joke?
If not can you explain this in more detail please? It doesn't make sense to me.
zorba wrote:
Page 96, i is missing on both sides of the equation e^(a+b)=(e^a)(e^b)

So what do you think the equation should be when it's corrected?


Sorry, I did not mean that the equation e^(a+b)=(e^a)(e^b) is wrong per se. What I meant is that if one is going to show those expressions on page 96 using Euler formula then one will include the i in them.
e^i(a+b)=(e^ia)(e^ib)
cos(a+b)+isin(a+b)=(cosa+isina)(cosb+isinb)
The right side of the above equation becomes
cosacosb-sinasinb+i[sinacosb+cosasinb]
Thus
cos(a+b)=cosacosb-sinasinb
sin(a+b)=sinacosb+cosasinb

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