Search: Herschel, John in correspondent 
Todhunter, Isaac in correspondent 
1860-1869 in date 
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Herschel4090

From:
Sir John Herschel
To:
Isaac Todhunter
Date:
[19 January 1866]
Source of text:
RS:HS 24.139
Summary:

Describes the problem of 'probability of three points on a plane forming an acute triangle.' Notes Augustus De Morgan has the same solution to the problem.

Contributor:
John Herschel Project

Herschel4130

From:
Sir John Herschel
To:
Isaac Todhunter
Date:
[18 July 1864]
Source of text:
RS:HS 24.54
Summary:

Cannot find the source of supposed Wilhelm Struve probability calculation; believes he has made a mistake. Regrets the error was not noticed in time to correct the seventh edition of Outlines Astr.

Contributor:
John Herschel Project

Herschel4264

From:
Sir John Herschel
To:
Isaac Todhunter
Date:
[4 July 1865]
Source of text:
RS:HS 24.116
Summary:

Sends copy of paper on 'projection of the sphere in which the problem is to make any infinitely small figure on the projection similar to that on the sphere,' which he has presented to the Royal Geographical Society.

Contributor:
John Herschel Project

Herschel4608

From:
Sir John Herschel
To:
Isaac Todhunter
Date:
[7 April 1864]
Source of text:
RS:HS 24.37
Summary:

Unable to find the calculation of Wilhelm Struve about which IT inquired. Will investigate the matter further.

Contributor:
John Herschel Project

Herschel4089

From:
Isaac Todhunter
To:
Sir John Herschel
Date:
[30 May 1865]
Source of text:
RS:HS 17.356
Summary:

Thanks JH for compliments on his work [History of the Mathematical Theory of Probability]. Suggests changes in the Wilhelm Struve probability problem.

Contributor:
John Herschel Project

Herschel4091

From:
Isaac Todhunter
To:
Sir John Herschel
Date:
[2 February 1866]
Source of text:
RS:HS 17.357
Summary:

Makes suggestions for the solution to the three point probability problem using integrals of infinity.

Contributor:
John Herschel Project

Herschel4129

From:
Isaac Todhunter
To:
Sir John Herschel
Date:
[11 July 1864]
Source of text:
RS:HS 17.354
Summary:

Asks again about Wilhelm Struve calculation in Outlines Astr.

Contributor:
John Herschel Project

Herschel4210

From:
Isaac Todhunter
To:
Sir John Herschel
Date:
[6 April 1864]
Source of text:
RS:HS 17.353
Summary:

Printing History of the Mathematical Theory of Probability. Inquires about a probability calculation of Wilhelm Struve's in JH's Outlines Astr.

Contributor:
John Herschel Project

Herschel4592

From:
Isaac Todhunter
To:
Sir John Herschel
Date:
[21 July 1864]
Source of text:
RS:HS 17.355
Summary:

Thanks JH for looking into the Wilhelm Struve probability calculation; makes note of the change in his work.

Contributor:
John Herschel Project

Herschel4607

From:
Isaac Todhunter
To:
Sir John Herschel
Date:
[5 November 1861]
Source of text:
RS:HS 17.352
Summary:

Thanks JH for compliments on his book [Theory of Equations]. Requests JH's signature for his application to the R.S.L.

Contributor:
John Herschel Project
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