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Effective topological degree computation based on interval arithmetic. (English) Zbl 1318.55002

The authors present a new numerical-combinatorial algorithm for the calculation of the topological degree for a continuous nonlinear map \(f: B \to \mathbb{R}^n\) with \(0 \notin F(\partial B),\) where \(B \subset \mathbb{R}^n\) is a box (the product of compact intervals) or an oriented cubical set (a finite union of well adjoining boxes). Some computational examples are given.

MSC:

55-04 Software, source code, etc. for problems pertaining to algebraic topology
68-04 Software, source code, etc. for problems pertaining to computer science
55P15 Classification of homotopy type
55M25 Degree, winding number
65Q20 Numerical methods for functional equations

Software:

TopDeg; smathlib

References:

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