Elementary surgery manifolds and the elementary ideals

Quasi elementary contractions of Fano manifolds

Smooth complex Fano varieties of dimension n form a limited family, so they have only a finite number of possible topological types. However not much is known about their topological invariants in higher dimensions. In particular we consider here the second Betti number b2 of a smooth Fano variety X, which coincides with the Picard number ρX . Recall that a Del Pezzo surface S has ρS ≤ 9. Fano ...

Elementary categories, elementary toposes

Positive Scalar Curvature for Manifolds with Elementary Abelian Fundamental Group

The statement often called the Gromov-Lawson-Rosenberg Conjecture asserts that a manifold with finite fundamental group should admit a metric of positive scalar curvature except when the KO∗-valued index of some Dirac operator with coefficients in a flat bundle is non-zero. We prove spin and oriented non-spin versions of this statement for manifolds (of dimension ≥ 5) with elementary abelian fu...

the relationship between self-awareness and learners’ performance on different reading comprehension test types among iranian efl elementary learners

یادگیری یک فرایند چند بعدی است که حیطه های مختلف شناختی، رفتاری، و عاطفی را شامل می شود. از آن جا که حیطه ی عاطفی ریشه در هیجانات و احساسات و حتی بر اساس برخی مطالعات خودآگاهی فراگیران دارد، محقق این مطالعه را بر اساس مدل هوش هیجانی دانیل گلمن انجام داده است. در این تحقیق توانش خودآگاهی به عنوان یکی از متغیرها دارای سه مولفه: خودآگاهی هیجانی، خود ارزشیابی صحیح، و اعتماد به نفس می باشد که ارتب...

Co-elementary Equivalence, Co-elementary Maps, and Generalized Arcs

By a generalized arc we mean a continuum with exactly two non-separating points; an arc is a metrizable generalized arc. It is well known that any two arcs are homeomorphic (to the real closed unit interval); we show that any two generalized arcs are co-elementarily equivalent, and that co-elementary images of generalized arcs are generalized arcs. We also show that if f : X → Y is a function b...