Projective Homotopy Classes of Stiefel Manifolds

Given a homotopy class [f] in πn(X), we say that [f] is projective if and only if there is a homotopy commutative factorizationwhere v is the standard double covering. We then denote by the subset of projective homotopy classes in πn(X).The notion of projective homotopy classes was studied in the author's thesis [5], and the projective homotopy classes for spheres in the stable range, up through the 3-stem were calculated in [6].</jats:p

A Biographical Dictionary : Containing An Historical Account Of All The Engravers, From The Earliest Period Of The Art Of Engraving To The Present Time; And A Short List Of Their Most Esteemed Works. ... To Which Is Prefixed, an Essay On The Rise And Progress Of The Art Of Engraving, Both On Copper And On Wood. ... / Vol. 2

Autopsie nach Ex. der LB OldenburgVorlageform der Veröffentlichungsangabe: London: Printed By J. Davis, For Robert Faulder, New Bond Stree

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A Biographical Dictionary : Containing An Historical Account Of All The Engravers, From The Earliest Period Of The Art Of Engraving To The Present Time; And A Short List Of Their Most Esteemed Works. ... To Which Is Prefixed, an Essay On The Rise And Progress Of The Art Of Engraving, Both On Copper And On Wood. ...

By Joseph StruttVorlageform der Veröffentlichungsangabe: London: Printed By J. Davis, For Robert Faulder, New Bond Stree

A Biographical Dictionary : Containing An Historical Account Of All The Engravers, From The Earliest Period Of The Art Of Engraving To The Present Time; And A Short List Of Their Most Esteemed Works. ... To Which Is Prefixed, an Essay On The Rise And Progress Of The Art Of Engraving, Both On Copper And On Wood. ... / Vol. 1

Autopsie nach Ex. der LB OldenburgVorlageform der Veröffentlichungsangabe: London: Printed By J. Davis, For Robert Faulder, New Bond Stree