### L. Soukup:

##
A non-special omega_2-tree with special omega_1-subtrees

Answering a question of F. Tall it is shown that if
ZF is consistent then so is ZFC + GCH + ``there exists a
non-special omega_2-Aronszajn tree having only special
omega_1-subtrees''.

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** appeared in ** * Comm. Math. Univ. Carol.,* 31, vol 3, 124-129.