# Accession Number:

## ADA064036

# Title:

## Globally Univalent C1-Maps with Separability.

# Descriptive Note:

## Technical summary rept.,

# Corporate Author:

## WISCONSIN UNIV-MADISON MATHEMATICS RESEARCH CENTER

# Personal Author(s):

# Report Date:

## 1978-10-01

# Pagination or Media Count:

## 12.0

# Abstract:

When solving one equation in one unknown, fx q, it is obviours geometrically that if x is continuously differentiable and fx not equal 0 for all x, then for each q the equation has at most one solution f is then said to be univalent. Of course the univalence of f does not ensure the existence of a solution, for example, e to the x power 0. When solving a system of n equations in n unknowns, fix1,...,xn qi i 1,...,n, the analogue of fx is the n x n Jacobian matrix del f sub idel x sub k. It is interesting to investigate conditions on the Jacobian matrix which will ensure the inivalence of the left hand of the equation. Such conditions are of practical importance if they are combined with conditions which ensure the existence of solutions because if the equation has a solution and if the left hand of the equation is univalent then the solution is unique.

# Descriptors:

# Subject Categories:

- Theoretical Mathematics