Def P & Q == PQ

is mentioned by

Thm* i,j:, y:{i...j}. iy & yj	[int_iseg_properties]
Def {i...j} == {k:| ik & kj }	[int_iseg]
Def i  j  k == ij & jk	[lele]
Def i  j < k == ij & j<k	[lelt]

In prior sections: core

Try larger context: StandardLIB IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html