This is TeX, WAITS Version 2.999 (preloaded format=plain 89.6.21)  4 DEC 1989 09:15
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[]\tenrm Since $\teni X[] \tensy ∩ \teni X[]$\tenrm , $\teni Y[] \tensy ∩ \teni 
Y[]$\tenrm , $\teni f\tenrm (\teni X[]; Y[]\tenrm ) \tensy ∩ \teni f\tenrm (\ten
i X[]; Y[]\tenrm )$, and $[]\tensy h\teni f\tenrm (\teni X[]; Y[]\tenrm )\teni ;
 f\tenrm (\teni X[]; Y[]\tenrm )\teni ; []\tensy i ∩ \teni f\tenrm (\teni X[]; Y
[]\tenrm )$;|

\hbox(7.5+2.5)x428.99947, glue set - 1.0
.\hbox(0.0+0.0)x20.0
.\tenrm S
.\tenrm i
.\tenrm n
.\tenrm c
.etc.

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Output written on A33.DVI[154,RWF] (2 pages, 10688 bytes).