Results 71 to 80 of about 208,586 (219)

Wesenszüge des mathematischen Denkens / Vortrag gehalten ... am 2. Dez. 1961. Neu hrsg. von Gabriele Dörflinger, Universitätsbibliothek Heidelberg [PDF]

open access: yes, 2008
Der Vortrag wurde bei der Jahresfeier der TH Karlsruhe 1961 gehalten. Der Autor definiert Mathematik als die Lehre von den Strukturen. Mathematik ist ebenso Wissenschaft, die die Logikregeln streng befolgt, als auch Kunst, die ästhetischen Kriterien ...
Weissinger, Johannes
core   +1 more source

Steiner Triple Systems With High Discrepancy

open access: yesJournal of Combinatorial Designs, Volume 34, Issue 1, Page 5-14, January 2026.
ABSTRACT In this paper, we initiate the study of discrepancy questions for combinatorial designs. Specifically, we show that, for every fixed r ≥ 3 and n ≡ 1 , 3 ( mod 6 ), any r‐colouring of the triples on [ n ] admits a Steiner triple system of order n with discrepancy Ω ( n 2 ).
Lior Gishboliner   +2 more
wiley   +1 more source

Stationary states in gas networks

open access: yesNetworks and Heterogeneous Media, 2015
Pipeline networks for gas transportation often contain circles.For such networks it is more difficult todetermine the stationary statesthan for networks without circles.We present a method that allows to computethe stationary states for subsonic pipe ...
Martin Gugat   +3 more
doaj   +1 more source

A. Stern's analysis of the nodal sets of some families of spherical harmonics revisited [PDF]

open access: yes, 2015
In this paper, we revisit the analyses of Antonie Stern (1925) and Hans Lewy (1977) devoted to the construction of spherical harmonics with two or three nodal domains.
Bérard, Pierre, Helffer, Bernard
core   +5 more sources

Dynamic boundary conditions with noise for an energy balance model coupled to geophysical flows

open access: yesMathematische Nachrichten, Volume 299, Issue 1, Page 60-84, January 2026.
Abstract This paper investigates a Sellers‐type energy balance model coupled to the primitive equations by a dynamic boundary condition with and without noise on the boundary. It is shown that this system is globally strongly well‐posed both in the deterministic setting for arbitrary large data in W2(1−1/p),p$W^{2(1-\nicefrac {1}{p}),p}$ for p∈[2,∞)$p \
Gianmarco Del Sarto   +2 more
wiley   +1 more source

Ist eine kleine Schulklassengrösse wirklich wichtig?

open access: yesSchweizerische Zeitschrift für Bildungswissenschaften
Es wird für die Schweiz untersucht, ob die Grösse der Schulklasse einen kausalen Einfluss auf die Mathematikleistungen hat. Hierfür werden Daten von ÜGK aus dem Jahre 2016, einer nationalen Schulleistungsstudie zu den Grundkompetenzen von Schülerinnen ...
Rolf Becker
doaj   +1 more source

100 years of GAMM: Motivation, history and achievements

open access: yesZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 106, Issue 1, January 2026.
Abstract The International Association of Applied Mathematics and Mechanics (Gesellschaft für Angewandte Mathematik und Mechanik, GAMM) was founded in 1923 with the goal to strengthen the field of scientific engineering by the foundation of an Engineering Association with strong scientific contacts to Applied Mathematics.
Wolfgang Ehlers
wiley   +1 more source

Families of surfaces lying in a null set

open access: yes, 2004
We generalise a result of Sawyer to show the following: For each y\in R^p and w\in R^q let \Gamma(y,w) be a measurable d-dimensional surface in R^n. Under conditions on the number of parameters and smoothness assumptions, there exists a set of measure ...
Wisewell, Laura
core   +1 more source

The log Grothendieck ring of varieties

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 1, January 2026.
Abstract We define a Grothendieck ring of varieties for log schemes. It is generated by one additional class “P$P$” over the usual Grothendieck ring. We show the naïve definition of log Hodge numbers does not make sense for all log schemes. We offer an alternative that does.
Andreas Gross   +4 more
wiley   +1 more source

On the local Kan structure and differentiation of simplicial manifolds

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 1, January 2026.
Abstract We prove that arbitrary simplicial manifolds satisfy Kan conditions in a suitable local sense. This allows us to expand a technique for differentiating higher Lie groupoids worked out in [8] to the setting of general simplicial manifolds. Consequently, we derive a method to differentiate simplicial manifolds into higher Lie algebroids.
Florian Dorsch
wiley   +1 more source

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