“…In this case, we prove that ∂K(x)/∂n > 0, where n is the outward unit normal of ∂M ε α at x 1 . Since for any j = 1, 9) and for small β > 1 − α, 10) we see that…”
Section: Multipeak Solutions Concentrating On the Minimum Setmentioning
confidence: 99%
“…The geometry of such configuration spaces has been extensively studied by topologists in recent years. For sophisticated techniques in this respect, the readers can refer to [9]. In this section, we give a lower bound of the category of B(R N , k), obtained by elementary considerations of the cuplength, relying on the fact that the symmetric group σ k contains the alternating groupσ k as a normal subgroup of index 2.…”
Section: Some Estimates Of the Cuplengthmentioning
“…In this case, we prove that ∂K(x)/∂n > 0, where n is the outward unit normal of ∂M ε α at x 1 . Since for any j = 1, 9) and for small β > 1 − α, 10) we see that…”
Section: Multipeak Solutions Concentrating On the Minimum Setmentioning
confidence: 99%
“…The geometry of such configuration spaces has been extensively studied by topologists in recent years. For sophisticated techniques in this respect, the readers can refer to [9]. In this section, we give a lower bound of the category of B(R N , k), obtained by elementary considerations of the cuplength, relying on the fact that the symmetric group σ k contains the alternating groupσ k as a normal subgroup of index 2.…”
Section: Some Estimates Of the Cuplengthmentioning
“…Rappelons qu'une Jf-application entre H -espaces uj : X -> Y est appelée une complétion en groupe si 7ro(û;) : 7To(X) -^ 7To(Y) est la complétion en groupe universelle et si H^(<jj\A) : H^(X^A) -^ H^(Y'^A) est la localisation par rapport au monoïde 7To(X) pour tout anneau de coefficients A. THÉORÈME 2.9 (May [13], [14], Cohen [7], Segal [17], Smith [18]). Preuve.…”
Section: Les Théorèmes D'approximation Et De Détection De May Et Coheunclassified
“…La complétion en groupe universelle de cette quasifibration définit alors une fibration principale d'espace total contractile, ce qui montre que la section "complétée" est une équivalence d'homotopie faible, i.e. la section (f>n{X) elle-même est une complétion en groupe, confirmant ainsi les calculs homologiques de Cohen [7]. D Pour une opérade cellulaire 0, l'approximation Le premier modèle combinatoire de Pendofoncteur ^5^ est dû à Milgram [15] qui introduit pour cela une famille de polytopes convexes, riches en symétries : les permutoèdres.…”
Section: Les Théorèmes D'approximation Et De Détection De May Et Coheunclassified
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