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Grid functions of nonstandard analysis in the theory of distributions and in partial differential equations
Functional Analysis · Submitted 3 Apr 2017
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We will show that in the space of grid functions it is possible to formulate problems from many areas of functional analysis in a way that coherently generalizes the standard approaches.
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The abstract, sentence by sentence
We introduce the space of grid functions, a space of generalized functions of nonstandard analysis that provides a coherent generalization both of the space of distributions and of the space of Young measures. We will show that in the space of grid functions it is possible to formulate problems from many areas of functional analysis in a way that coherently generalizes the standard approaches. As an example, we discuss some applications of grid functions to the calculus of variations and to the nonlinear theory of distributions. Applications to nonlinear partial differential equations will be discussed in a subsequent paper.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We introduce the space of grid functions, a space of generalized functions of nonstandard analysis that provides a coherent generalization both of the space of distributions and of the space of Young measures. | contribution 1.00 | 0.91 | 0.45 | asserted 1.00 |
| s1 | We will show that in the space of grid functions it is possible to formulate problems from many areas of functional analysis in a way that coherently generalizes the standard approaches. | contribution 0.73 | 0.67 | 0.41 | hedged possibility 0.53 |
| s2 | As an example, we discuss some applications of grid functions to the calculus of variations and to the nonlinear theory of distributions. | contribution 0.92 | 0.81 | 0.10 | asserted 0.88 |
| s3 | Applications to nonlinear partial differential equations will be discussed in a subsequent paper. | future work 1.00 | 0.17 | 0.04 | asserted 0.89 |
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The paper
Original abstract
We introduce the space of grid functions, a space of generalized functions of nonstandard analysis that provides a coherent generalization both of the space of distributions and of the space of Young measures. We will show that in the space of grid functions it is possible to formulate problems from many areas of functional analysis in a way that coherently generalizes the standard approaches. As an example, we discuss some applications of grid functions to the calculus of variations and to the nonlinear theory of distributions. Applications to nonlinear partial differential equations will be discussed in a subsequent paper.
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How the literature uses it
1 arXiv paper cite this in 3 sentences
Papers citing it · 1 sentence without a confident label
Cites it as background 1 paper
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Nonetheless, these have their own drawbacks (e.g. they sacrifice coherence between the product over $C^0(ℝ)$ and that of the differential algebra), and different formulations are actively being investigated by mathematicians [ref] .
Particle-without-Particle: a practical pseudospectral collocation method for linear partial differential equations with distributional sources · Limitations of the method · 0.89
What it cites · 1 sentence without a confident label
Cites as background 1 paper
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In [ref] and subsequent papers [ref] , the authors developed a theory of ultrafunctions, i.e. nonstandard vector spaces of a hyperfinite dimension that extend the space of distributions.
Ultrafunctions and generalized solutions · Introduction · 0.94
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