C O L L O Q U I U M M A T H E M A T I C U M
VOL. 76 1998 NO. 2
CORRECTION TO
“THE UNIVERSAL SKEW FIELD OF FRACTIONS OF A TENSOR PRODUCT OF FREE RINGS”
(COLLOQ. MATH. 72 (1997), 1–8)
BY
P. M. C O H N (LONDON)
In the second line on page 5, A 2 should be replaced by E 2 , the subfield of H generated by the image of A 2 . A full matrix over E 1 ⊗ E 2 is full over K 1 ⊗ E 2 , because the latter is E 2 < ( X 1 > ) , which is a localization of the fir A 1 ⊗ E 2 = E 2 hX 1 i.
University College London Gower Street
London WC1E 6BT U.K.
Received 5 January 1998
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