International Catalogue of Scientific Literature. 

 (A) PURE MATHEMATICS. 



0000 Philosophy. 



0010 History. Biography. 



OO'iO Periodicals. Reports of Institutions, Societies, Oon> 

 gresses, etc. 



0030 General Treatises, Text. Books, Dictionaries, Biblio- 

 graphies, Tables. 



0040 Adrlresses, Lectures. 



0050 Pedagogy. 



OOfJO Institutions, Economics. 



0070 Nomenclature. 



0080 Instruments. Models. 



0^90 Aids to Calculation, Graphical Processes. 



FUNDAMENTAL NOTIONS. 



Foundations of Arithmetic. 



0400 General. 



0410 Rational numbers; arithmetical operations. 



0120 Existence of irrational and transcendental numbers; 



infinite processes adapted to rational numbers. 

 0430 Aggregates. 



Universal Algebra. 



0800 General. 



0810 Calculus of Ope-i-ations. 



0820 General tlieorj" of complex numbers. 



0830 Quaternions. 



0840 Ausdehnungslehre ; vector-analysis. (>S'^e also 6430.) 



0850 Matrices. 



0860 Other special sorts of complex numbers. 



0870 Alg'ebra of Logic. 



Theory of Groups. 



1200 General. 



1210 Discrete groups of finite order (including groups of 



permutations). {See also 2450.) 

 1220 Discrete groups of infinite order. {See also 4440.) 

 1230 Continuous groups of finite order. {See also 5240.) 

 1240 Contiuuuiis groups of infinite order. {See also 5240). 

 (A-9833) B 2 



