Results 131 to 140 of about 1,191 (241)
Free C+ actions on affine threefolds [PDF]
, 2005 We study algebraic actions of the additive group C+ on an affine threefold X and prove a smoothness property for the quotient morphism X -< X//C+. Then, following Shulim Kaliman, we give a proof of the conjecture that every free C+ action on affine 3 ...
Kraft, H.
core
Approximate maps characterizing injectivity and surjectivity of maps
, 2017 In the theory of inverse systems, in order to study the properties of a space X or a map f: X → Y between spaces, one expands X to an inverse system X or expands f to a map f: X → Y between the inverse systems, and then work on X or f.
Miyata, Takahisa, Takahisa Miyata
core +1 more source
, 2011 A formula for the number of surjective mappings from a set with $a$ elements to a set with $b$ elements is proven in three different ways. The stress is put on methodology rather than on the result itself.
openaire +1 more source
Decision procedures for surjectivity and injectivity of parallel maps for tessellation structures
, 1972 After demonstrating the existence of nontrivial information Jossless parallel maps on one-dimensional iterative array configurations, algorithms are presented for deciding the injectivity or surjectivity of the global maps given their defining local maps.
Amoroso, S. +3 more
core +1 more source
Double phase elliptic inclusions with convection and logarithmic perturbed terms
Bulletin of Mathematical SciencesThis paper deals with a new double phase elliptic inclusion (DPEI) formulated by a double phase partial differential operator with logarithmic perturbation, a general multivalued convection term defined in the domain and a general multivalued term ...
Shengda Zeng +2 more
doaj +1 more source
Minimal manipulability: anonymity and surjectivity
, 2004 Gibbard''s (1973) and Satterthwaite''s (1975) result implies that anonymous surjective social choice functions on more than two alternatives are manipulable. Placing some mild constraints on the number of agents compared to the number of alternatives, we show what the minimal number of manipulable profiles of such social choice functions is.
Maus,Stefan, Peters,Hans, Storcken,Ton
openaire +2 more sources
A short proof of the surjectivity of the period map on K3 manifolds
, 2023 In this note, we give a simple proof of the Todorov's surjectivity result on the period map of K3 surfaces in a differential geometric setting. Our proof makes use of collasping geometry of hyperk\"{a}hler 4-manifolds developped by Sun-Zhang, and does ...
Liu, Hongyi
core
On the Surjectivity of Certain Maps III: The Unital Set Condition
, 2020 In this article, for generalized projective spaces with any weights, we prove four main theorems in three different contexts where the Unital Set Condition USC (Definition $2.8$) on ideals is further examined.
Kumar, C P Anil
core
Analysis of an evolutionary fractional hemivariational inequality with applications
Demonstratio MathematicaThis paper investigates a novel abstract system that includes a fractional differential equation of the Atangana-Baleanu type and a history-dependent evolutionary hemivariational inequality (AB-FDEHI).
Su Guangwang +3 more
doaj +1 more source
Study of a class of nonlinear heterogeneous diffusion with mixed phases under L∞ − data
Mathematical Modelling and AnalysisIn this paper we investigate a class of nonlinear degenerate parabolic equations involving heterogeneous (p,q)-Laplacian operators and subject to Dirichlet boundary conditions.
El Mehdi Hassoune +3 more
doaj +1 more source