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Infinite primes and ordered fields

D. W. Dubois — 1970

CONTENTSIntroduction....................................................................................... 5§ 1. Preliminaries............................................................................ 8§ 2. Constructions........................................................................... 10§ 3. Orders and modes.................................................................. 13§ 4. Conic primes............................................................................ 19§ 5. Intersections...

General numeration I. Gauged schemes.

D. W. Dubois — 1982

Revista Matemática Hispanoamericana

The paper deals with special partitions of whole numbers in the following form: given a sequence of pairs {[Gi;Di]} of positive integers in which the Gi form a strictly increasing sequence, sums of the form ∑niGi, with 0 ≤ ni ≤ Di, are considered. The correspondence [nk ... n0] → ∑i≤k n...

General numeration II. Division schemes.

D. W. Dubois — 1982

Revista Matemática Hispanoamericana

This is the second in a series of two papers on numeration schemes. Whereas the first paper emphasized grouping as exemplified in the partition of a number so as to obtain its base two numeral, the present paper takes at its point of departure the method of repeated divisions, as in the calculation of the base two numeral for a number by dividing it by two, then dividing the quotient by two, etc., and collecting the remainders. This method is a sort of classification scheme - odd or even.

Real commutative algebra. III. Dedekind-Weber-Riemann manifolds.

D. W. DuboisA. Bukowski — 1980

Revista Matemática Hispanoamericana

The space S of all non-trivial real places on a real function field K|k of trascendence degree one, endowed with a natural topology analogous to that of Dedekind and Weber's Riemann surface, is shown to be a one-dimensional k-analytic manifold, which is homeomorphic with every bounded non-singular real affine model of K|k. The ground field k is an arbitrary ordered, real-closed Cantor field (definition below). The function field K|k is thereby represented as a field of real mappings of S which might...

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