Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Sirkka-Liisa Eriksson"'
Autor:
Sirkka-Liisa Eriksson, Heikki Orelma
Publikováno v:
Cubo, Vol 26, Iss 2, Pp 341-358 (2024)
In this article, we study the extended Weinstein equation \[ Lu=\Delta u+\frac{k}{x_n}\frac{\partial u}{\partial x_n}+\frac{\ell}{x_n^2}u, \] where \(u\) is a sufficiently smooth function defined in \(\mathbb{R}^n\) with \(x_n>0\) and \(n\ge 3\).
Externí odkaz:
https://doaj.org/article/3e27897f2f5c48b884351451ede4ebbd
Autor:
Sirkka-Liisa Eriksson, Elina Viro
Publikováno v:
LUMAT, Vol 3, Iss 7 (2015)
Yläkoulun matematiikan opetuksen haasteena on sytyttää oppilaiden innostus ja auttaa heitä ymmärtämään matematiikan kokonaiskuva. Nykyisiä matematiikan opetusmenetelmiä pidetään usein teoreettisina ja ne opettavat vain osan tarvittavista
Externí odkaz:
https://doaj.org/article/cef04ba0b766465f8506c73c79803473
Publikováno v:
LUMAT, Vol 3, Iss 6 (2015)
We present how the education of subject teachers is organized in mathematics, science and computer science in Tampere. It is based on the idea that both engineering students and students from mathematics and science may choose to become a subject tea
Externí odkaz:
https://doaj.org/article/0573622c4def49a98a1d9aaa5f1817a2
A mixed lattice group is a generalization of a lattice ordered group. The theory of mixed lattice semigroups dates back to the 1970s, but the corresponding theory for groups and vector spaces has been relatively unexplored. In this paper we investiga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eaaec6064a99693a7cf6e669477cd703
https://trepo.tuni.fi/handle/10024/127784
https://trepo.tuni.fi/handle/10024/127784
Autor:
Terhi Kaarakka, Sirkka-Liisa Eriksson
We study harmonic functions with respect to the Riemannian metric $$\begin{aligned} ds^{2}=\frac{dx_{1}^{2}+\cdots +dx_{n}^{2}}{x_{n}^{\frac{2\alpha }{n-2}}} \end{aligned}$$ d s 2 = d x 1 2 + ⋯ + d x n 2 x n 2 α n - 2 in the upper half space $$\ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4dcef4efa2243a39fef1196cf15bbc82
https://trepo.tuni.fi/handle/10024/127714
https://trepo.tuni.fi/handle/10024/127714
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
In this paper we introduce the modified Dirac operators $$\mathcal {M}_{\mathbf {x}}^\kappa f{:}= \,\partial _{\mathbf {x}}f-\frac{\kappa }{x_m}e_m\cdot f$$ and $$\mathcal {M}_{\mathbf {y}}^\tau f{:}= \,\partial _{\mathbf {y}}f-\frac{\tau }{y_m}e_m \
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ad8ef5b86a1ecf95e63ec96f30a4999
https://doi.org/10.1007/s11785-017-0728-7
https://doi.org/10.1007/s11785-017-0728-7
Autor:
Sirkka-Liisa Eriksson, Heikki Orelma
We are studying hyperbolic function theory in the total skew-field of quaternions. Earlier the theory has been studied for quaternion valued functions depending only on three reduced variables. Our functions are depending on all four coordinates of q
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc39a7187eb94492c93254e6b0a2aa63
http://hdl.handle.net/10138/307076
http://hdl.handle.net/10138/307076
Autor:
Heikki Orelma, Sirkka-Liisa Eriksson
Publikováno v:
Trends in Mathematics ISBN: 9783030238537
We are studying hyperbolic function theory in the skew-field of quaternions. This theory is connected to k-hyperbolic harmonic functions that are harmonic with respect to the hyperbolic Riemannian metric $$\displaystyle ds_{k}^{2}=\frac {dx_{0}^{2}+d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b167c023a59193c134ab2d3012dee9f
https://doi.org/10.1007/978-3-030-23854-4_2
https://doi.org/10.1007/978-3-030-23854-4_2
Autor:
Heikki Orelma, Sirkka-Liisa Eriksson
Publikováno v:
Complex Analysis and Operator Theory. 11:1193-1204
Complex holomorphic functions are defined using a complex derivative. In higher dimensions the meaningful generalization of complex derivative is not straight forward. Sudbery defined a derivative for quaternion regular functions using differential f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::510536bfae10526f7a93447926736322
https://doi.org/10.1007/s11785-016-0630-8
https://doi.org/10.1007/s11785-016-0630-8
Autor:
Heikki Orelma, Sirkka-Liisa Eriksson
Publikováno v:
Advances in Applied Clifford Algebras. 27:99-110
We are studying a function theory of k-hypermonogenic functions connected to k-hyperbolic harmonic functions that are harmonic with respect to the hyperbolic Riemannian metric $$ds_{k}^{2} = x_{n}^{\frac{2k}{1-n}} \left(dx_{0}^{2} + \cdots + dx_{n}^{
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cee606f10c0903c589e5b9900281f9a
https://doi.org/10.1007/s00006-015-0629-7
https://doi.org/10.1007/s00006-015-0629-7