Across
- 4. is a concept so basic to modern mathematics that it is not possible to give it a precise definition without going deeply into the study of mathematical logic
- 5. The objects that together make up a particular function often described as a rule which associates with an element in one set a unique element in another set; we will give a definition which avoids the undefined term ‘rule’.
Down
- 1. is a mapping whose domain is the set N of positive integers
- 2. an onto function
- 3. point a point is called for the real-valued sequence {an} if it is either
- 6. space vector spaces