Identity area
Reference code
Add. MS c/67/111
Title
Letter from Augustus De Morgan to Robert Leslie Ellis
Date(s)
- 24 June 1854 (Creation)
Level of description
Item
Extent and medium
1 folded sheet, 2 printed sheets
Context area
Name of creator
Repository
Archival history
Immediate source of acquisition or transfer
The offprint was the gift of Lady Jeffreys, July 1979.
Content and structure area
Scope and content
Offers a theorem for the four colour problem, which has become an axiom in his mind, an example of Whewell's latent axiom, things which are not at first credible but which settle down into first principles, asks for Ellis' thoughts.
Appraisal, destruction and scheduling
Accruals
System of arrangement
Conditions of access and use area
Conditions governing access
Conditions governing reproduction
Language of material
Script of material
Language and script notes
Physical characteristics and technical requirements
Finding aids
Allied materials area
Existence and location of originals
Existence and location of copies
Related units of description
Notes area
Note
Accompanied by an offprint by Lady Jeffreys from the Mathematical Gazette 1979 with a letter to the editor referring to the proof in the letter.