9 citations · 19 across the 25 of their papers we have counts for
29 papers
Weak and genuine A_n-formality for number fields
Ambrus Pál, Gereon Quick
We introduce weak -formality for Galois cochain algebras and, for profinite groups whose mod- cohomology is concentrated in degrees at most two, characterise weak and genui…
-formality for pro-2 Demushkin groups
Ambrus Pál, Gereon Quick
We study a weak form of formality for differential graded algebras, called -formality, and show that the differential graded -algebras of continuous cochains of…
-formality for Demushkin groups at odd primes
Ambrus Pál, Gereon Quick
We study a weak form of formality for differential graded algebras, called -formality, for the cohomology of pro-p Demushkin groups at odd primes p. We show that the different…
Non-realizability of a triple Massey product for the algebra
Eivind Xu Djurhuus, Gereon Quick
We show that an often used example of a cohomology algebra with non-vanishing triple Massey product is intrinsically A_3-formal and therefore, in fact, cannot be realized as the co…
Quasi-Boolean groups
Ambrus Pál, Gereon Quick
We give several equivalent characterisations of the maximal pro-2 quotients of real projective groups. In particular, for pro-2 real projective groups we provide a presentation in…
Geometric representation of cohomology classes for the Lie groups Spin(7) and Spin(8)
Eiolf Kaspersen, Gereon Quick
By constructing concrete complex-oriented maps we show that the eight-fold of the generator of the third integral cohomology of the spin groups Spin(7) and Spin(8) is in the image…