As a consequence of identifying the principle described in the title, we prove that for any uncountable cardinal λ, if there is a λ-free Whitehead group of cardinality λ which is not free, then there are many “nice” Whitehead groups of cardinality λ which are not free.

The aim of this contribution was to review the species of Ctenocolum which are mainly distributed in the Neotropical region. The larvae of this genus have a high degree of specificity with the tribe Millettieae feeding mainly on seeds of Lonchocarpus Kunth (Fabaceae, Papilionoideae) and until now we do not know other bruchine consuming seeds of this genus. Here 13 valid species were studied, fi...

Kenneth M. Anderson, Richard N. Taylor* and E. James Whitehead Jr.** Department of Information and Computer Science University of California, Irvine Irvine, CA 92697-3425, USA Email: [email protected], Tel: +1.714.824.2776, Kenneth M. Anderson home page *Email: [email protected], Tel: +1.714.824.6429, Richard N. Taylor home page **Email: [email protected], Tel: +1.714.824.4121, E. James White...

We define a symmetric monodical pairing G ◦ H among simply connected co-H spaces G and H with the property that S(G◦H) is equivalent to the smash product G∧H as co-H spaces. We further generalize the Whitehead product map to a map G ◦ H → G ∨ H whose mapping cone is the cartesian product. Whitehead products have played an important role in unstable homotopy. They were originally introduced [Whi...

the process theology is one of the theological systems which spread during postmodern period. this kind of theology tries to revive the spiritual system. david ray griffin is one of the process theologians and has many systematic researches. according to his idea, spiritual system in pre- modern considers the world in a way that is subjugated to an all-powerful being that unilaterally intervene...