12,595 research outputs found
Digital Repository of Mathematical Formulae
The purpose of the NIST Digital Repository of Mathematical Formulae (DRMF) is
to create a digital compendium of mathematical formulae for orthogonal
polynomials and special functions (OPSF) and of associated mathematical data.
The DRMF addresses needs of working mathematicians, physicists and engineers:
providing a platform for publication and interaction with OPSF formulae on the
web. Using MediaWiki extensions and other existing technology (such as software
and macro collections developed for the NIST Digital Library of Mathematical
Functions), the DRMF acts as an interactive web domain for OPSF formulae.
Whereas Wikipedia and other web authoring tools manifest notions or
descriptions as first class objects, the DRMF does that with mathematical
formulae. See http://gw32.iu.xsede.org/index.php/Main_Page
Comparative Verification of the Digital Library of Mathematical Functions and Computer Algebra Systems
Digital mathematical libraries assemble the knowledge of years of
mathematical research. Numerous disciplines (e.g., physics, engineering, pure
and applied mathematics) rely heavily on compendia gathered findings. Likewise,
modern research applications rely more and more on computational solutions,
which are often calculated and verified by computer algebra systems. Hence, the
correctness, accuracy, and reliability of both digital mathematical libraries
and computer algebra systems is a crucial attribute for modern research.
In this paper, we present a novel approach to verify a digital mathematical
library and two computer algebra systems with one another by converting
mathematical expressions from one system to the other. We use our previously
eveloped conversion tool (referred to as LaCASt) to translate formulae from the
NIST Digital Library of Mathematical Functions to the computer algebra systems
Maple and Mathematica. The contributions of our presented work are as follows:
(1) we present the most comprehensive verification of computer algebra systems
and digital mathematical libraries with one another; (2) we significantly
enhance the performance of the underlying translator in terms of coverage and
accuracy; and (3) we provide open access to translations for Maple and
Mathematica of the formulae in the NIST Digital Library of Mathematical
Functions
Comparative Verification of the Digital Library of Mathematical Functions and Computer Algebra Systems
Digital mathematical libraries assemble the knowledge of years of mathematical research. Numerous disciplines (e.g., physics, engineering, pure and applied mathematics) rely heavily on compendia gathered findings. Likewise, modern research applications rely more and more on computational solutions, which are often calculated and verified by computer algebra systems. Hence, the correctness, accuracy, and reliability of both digital mathematical libraries and computer algebra systems is a crucial attribute for modern research. In this paper, we present a novel approach to verify a digital mathematical library and two computer algebra systems with one another by converting mathematical expressions from one system to the other. We use our previously developed conversion tool (referred to as ) to translate formulae from the NIST Digital Library of Mathematical Functions to the computer algebra systems Maple and Mathematica. The contributions of our presented work are as follows: (1) we present the most comprehensive verification of computer algebra systems and digital mathematical libraries with one another; (2) we significantly enhance the performance of the underlying translator in terms of coverage and accuracy; and (3) we provide open access to translations for Maple and Mathematica of the formulae in the NIST Digital Library of Mathematical Functions
Extracting mathematical semantics from LaTeX documents
We report on a project to use SGLR parsing and term rewriting with ELAN4 to extract the semantics of mathematical formulas from a LaTeX document and representing them in MathML. The LaTeX document we used is part of the Digital Library of Mathematical Functions (DLMF) project of the US National Institute of Standards and Technology (NIST) and obeys project-specific conventions, which contains macros for mathematical constructions, among them 200 predefined macros for special functions, the subject matter of the project. The SGLR parser can parse general context-free languages, which suffices to extract the structure of mathematical formulas from calculus that are written in the usual mathematical style, with most parentheses and multiplication signs omitted. The parse tree is then rewritten into a more concise and uniform internal syntax that is used as the base for extracting MathML or other semantical information
Extracting mathematical semantics from LaTeX documents
We report on a project to use SGLR parsing and term rewriting with ELAN4 to extract the semantics of mathematical formulas from a LaTeX document and representing them in MathML. The LaTeX document we used is part of the Digital Library of Mathematical Functions (DLMF) project of the US National Institute of Standards and Technology (NIST) and obeys project-specific conventions, which contains macros for mathematical constructions, among them 200 predefined macros for special functions, the subject matter of the project. The SGLR parser can parse general context-free languages, which suffices to extract the structure of mathematical formulas from calculus that are written in the usual mathematical style, with most parentheses and multiplication signs omitted. The parse tree is then rewritten into a more concise and uniform internal syntax that is used as the base for extracting MathML or other semantical information
zbMATH Open: API Solutions and Research Challenges
We present zbMATH Open, the most comprehensive collection of reviews and
bibliographic metadata of scholarly literature in mathematics. Besides our
website https://zbMATH.org which is openly accessible since the beginning of
this year, we provide API endpoints to offer our data. The API improves
interoperability with others, i.e., digital libraries, and allows using our
data for research purposes. In this article, we
(1) illustrate the current and future overview of the services offered by
zbMATH;
(2) present the initial version of the zbMATH links API;
(3) analyze potentials and limitations of the links API based on the example
of the NIST Digital Library of Mathematical Functions;
(4) and finally, present the zbMATH Open dataset as a research resource and
discuss connected open research problems
Funciones Especiales en la Era Digital
Aunque es difícil dar una definición precisa de qué es una función
especial, podríamos decir que las funciones especiales lo son en parte por ser
importantes en diversas aplicaciones, y en parte por satisfacer determinadas
propiedades. Una de las referencias clásicas para la consulta de propiedades y
aproximaciones de funciones especiales es el Handbook of Mathematical Functions
with Formulas, Graphs, and Mathematical Tables, editado por Milton
Abramowitz e Irene Stegun y publicado originalmente en 1964 por el National
Bureau of Standards. Recientemente, el National Institute of Standards and
Technology (NIST, denominación moderna del NBS) acometió el proceso de
modernización del Handbook que culminó en 2010 con el lanzamiento del NIST
Handbook of Mathematical Functions y su versión online y de libre acceso, la
NIST Digital Library of Mathematical Functions. En esta nueva obra, las tablas
de valores numéricos de funciones que aparecían en el manual de Abramowitz
y Stegun han sido, como es lógico, sustituidas por referencias a software numérico.
Este listado de referencias es necesariamente incompleto, pues estamos
muy lejos de disponer de software numérico satisfactorio para todas las funciones
contenidas en el NIST Handbook, y no parece sencillo que lo pueda haber
a medio plazo. Tampoco parece sencillo describir todos los métodos necesarios
para evaluar todas las funciones especiales, aunque sí es posible describir y
analizar los métodos numéricos básicos e ilustrarlos con ejemplos específicos.
En este artículo nos planteamos exponer brevemente algunas de las técnicas
habituales involucradas en la construcción de algoritmos para evaluar funciones
matemáticas, así como proporcionar referencias sobre software de cálculo
de algunas de estas funciones
Improving the Representation and Conversion of Mathematical Formulae by Considering their Textual Context
Mathematical formulae represent complex semantic information in a concise
form. Especially in Science, Technology, Engineering, and Mathematics,
mathematical formulae are crucial to communicate information, e.g., in
scientific papers, and to perform computations using computer algebra systems.
Enabling computers to access the information encoded in mathematical formulae
requires machine-readable formats that can represent both the presentation and
content, i.e., the semantics, of formulae. Exchanging such information between
systems additionally requires conversion methods for mathematical
representation formats. We analyze how the semantic enrichment of formulae
improves the format conversion process and show that considering the textual
context of formulae reduces the error rate of such conversions. Our main
contributions are: (1) providing an openly available benchmark dataset for the
mathematical format conversion task consisting of a newly created test
collection, an extensive, manually curated gold standard and task-specific
evaluation metrics; (2) performing a quantitative evaluation of
state-of-the-art tools for mathematical format conversions; (3) presenting a
new approach that considers the textual context of formulae to reduce the error
rate for mathematical format conversions. Our benchmark dataset facilitates
future research on mathematical format conversions as well as research on many
problems in mathematical information retrieval. Because we annotated and linked
all components of formulae, e.g., identifiers, operators and other entities, to
Wikidata entries, the gold standard can, for instance, be used to train methods
for formula concept discovery and recognition. Such methods can then be applied
to improve mathematical information retrieval systems, e.g., for semantic
formula search, recommendation of mathematical content, or detection of
mathematical plagiarism.Comment: 10 pages, 4 figure
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