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- W2029669601 abstract "Given functions ƒ 1 ( x ), ..., ƒ n ( x ), x = ( x 1 , ..., x m ) ∈ M , where M is an open parallelepiped or simplex, let all minors of the matrix [formula] be positive for all x ∈ M . It is shown that if the sequence y 1 − x 1 , .., y m − x m with ( x 1 , ..., x m ), ( y 1 , ..., y m ) ∈ M has k sign-changes, then there are no more than k sign changes in the sequence ƒ 1 ( y ) −ƒ 1 ( x ), ..., ƒ n ( y ) − ƒ n ( x )." @default.
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- W2029669601 date "1994-06-01" @default.
- W2029669601 modified "2023-09-28" @default.
- W2029669601 title "Sign-Change Diminishing Systems of Functions of Many Variables" @default.
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- W2029669601 doi "https://doi.org/10.1006/jath.1994.1050" @default.
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