Do we really need that $\mathcal{E}$ is locally free for part (c) of Exercise 5.1 in Chapter II of Hartshorne?
87750
Hom / tensor adjunction for $O_X$ modules?
79024
the derivation of E(X|X)
39755
In a faithfully flat ring extension, is $\operatorname{ht}I=\operatorname{ht}IS$ right?
70298
Are quotients of chain groups $C_n(X)/C_n(A)$ still free?
147705
Show that $\mathbb{E}(T) = \sum\limits^\infty_{k=1}\mathbb{P}(T \geq k)$ for $T$ nonnegative integer valued and $E[T] < \infty$
75429
A Hamel basis for $\ell^p$?
85148
How do ideal quotients behave with respect to localization?
62484
Proving Hartshorne's Exercise I-1.9 by using exercise I-1.8
82464
$U^*\otimes V$ versus $L(U,V)$ for infinite dimensional spaces
73367
On $E[E[Y|X]|X]= E[Y|X]$
95022
Help understanding proof of the following statement $E(Y) = \sum_{i = 1}^{\infty} P(Y \geq k)$
28272
Does such localization of integral extension preserve inclusion?
39201
Atiyah-Macdonald, Exercise 5.4
122603
How does $\mathcal E(\rho)=\mathrm{Tr}_{env}[U(\rho\otimes\rho_{env})U^\dagger]$ turn into $P_0\rho P_0+P_1\rho P_1$?
43462
Disprove $\mathcal{P}(A\Delta B) \setminus \{\emptyset\} = \mathcal{P}(A) \Delta\mathcal{P}(B) $. Is my proof good?
148139
Exercise $1.8$ of chapter one in Hartshorne.
23946
Prove the definitions of $e$ to be equivalent