Results 1 to 10 of about 11,362 (259)

Non-Integer Valued Winding Numbers and a Generalized Residue Theorem

open access: yesJournal of Mathematics, 2019
We define a generalization of the winding number of a piecewise C1 cycle in the complex plane which has a geometric meaning also for points which lie on the cycle.
Norbert Hungerbühler, Micha Wasem
doaj   +1 more source

Regularized singular boundary method for groundwater flow in a cofferdam

open access: yesMATEC Web of Conferences, 2018
The boundary integral methods form one group of methods for solving differential equations. The boundary element method (BEM) is the basic method of this group.
Mužík Juraj, Bulko Roman
doaj   +1 more source

Information Covariance Matrices for Multivariate Burr III and Logistic Distributions

open access: yesInternational Journal of Industrial Engineering and Production Research, 2008
Main result of this paper is to derive the exact analytical expressions of information and covariance matrices for multivariate Burr III and logistic distributions.
Gh. Yari, A.M. Djafari
doaj  

Green's functions for the wave, Helmholtz and Poisson equations in a two-dimensional boundless domain

open access: yesRevista Brasileira de Ensino de Física
In this work, Green's functions for the two-dimensional wave, Helmholtz and Poisson equations are calculated in the entire plane domain by means of the two-dimensional Fourier transform.
Roberto Toscano Couto
doaj   +1 more source

Improper multiple integrals [PDF]

open access: yesTransactions of the American Mathematical Society, 1906
openaire   +1 more source

Some Aspects of Teaching Improper Integrals in an Electronic Environment

open access: yesMathematics
The development of computer technology and communication systems provides new opportunities for learning in an electronic environment. Remote education in virtual electronic classrooms has been widely used in recent decades, especially during the ...
Valentina Petrova Todorova-Lazarova   +1 more
doaj   +1 more source

Ocular perforating injury by an acupuncture needle: two cases reports. [PDF]

open access: yesInt J Ophthalmol
Song HP   +5 more
europepmc   +1 more source

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