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Harold asks what conditions on f:M->L$f:M\to L$ and g:N->L$g:N\to L$, both smooth maps of smooth manifolds, ensures the existence of the fibre product M x_L N$M \times_L N$.
Harold asks what conditions on f:M->L and g:N->L, both smooth maps of smooth manifolds, ensures the existence of the fibre product M x_L N.
Harold asks what conditions on $f:M\to L$ and $g:N\to L$, both smooth maps of smooth manifolds, ensures the existence of the fibre product $M \times_L N$.
