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2015

2015

A bstractWe explore the properties of non-local effective actions which include gravitational couplings. Non-local functions… Expand

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2013

2013

This paper reports a study on designing and testing an instructional sequence for the teaching and learning of the concept of… Expand

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2011

2011

This paper is purely expositional. The statement of the Abel-Ruffini theorem on unsolvability of equations using radicals is… Expand

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2010

2010

article i nfo The Carboniferous to early Permian apparent polar wander (APW) path for Eurasia is not well constrained, because of… Expand

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2007

2007

We present a proof of the non-solvability in radicals of a general algebraic equation of degree greater than four. This proof… Expand

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2003

2003

In this paper we present an algorithm for the approximate solution of a class of Volterra integral equations of the first kind… Expand

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Highly Cited

2000

Highly Cited

2000

GPS radio occultations allow the sounding of the Earth's atmosphere (i.e. troposphere and ionosphere). The basic observable of… Expand

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Highly Cited

1988

Highly Cited

1988

In this paper we apply Galois methods to certain fundamentalgeometric optimization problems whose exact computational complexity… Expand

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1985

1985

In this paper we show that the problem of finding the shortest path between two points in Euclidean 3-space, bounded by a finite… Expand

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1985

1985

This correspondence addresses the problem of how to regard the fundamental impossibility with time-frequency energy distributions… Expand

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