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1d
answered Having trouble drawing an arc using atan2 and specified range of arc.
1d
asked Having trouble drawing an arc using atan2 and specified range of arc.
2d
revised Computation of minimal axis-aligned bounding box of an arc segment.
added 1675 characters in body
2d
answered Computation of minimal axis-aligned bounding box of an arc segment.
2d
asked Computation of minimal axis-aligned bounding box of an arc segment.
Jan
26
comment How do you prove that $Y^*(1_B) = 1_{Y^*B}$ given $Y^*(f) = \mathcal{A}(f, -)$?
Thank you! I will go over your post later.
Jan
26
accepted How do you prove that $Y^*(1_B) = 1_{Y^*B}$ given $Y^*(f) = \mathcal{A}(f, -)$?
Jan
26
asked How do you prove that $Y^*(1_B) = 1_{Y^*B}$ given $Y^*(f) = \mathcal{A}(f, -)$?
Jan
26
accepted Why does it make sense to consider $\text{Fun}(\mathcal{A}, \text{Set})$ when category $\mathcal{A}$ is small and not otherwise?
Jan
25
comment Why does it make sense to consider $\text{Fun}(\mathcal{A}, \text{Set})$ when category $\mathcal{A}$ is small and not otherwise?
@AsafKaragila category theory is $\text{Fun}$.
Jan
25
comment Why does it make sense to consider $\text{Fun}(\mathcal{A}, \text{Set})$ when category $\mathcal{A}$ is small and not otherwise?
I see now. Thank you for your explanation!
Jan
25
asked Why does it make sense to consider $\text{Fun}(\mathcal{A}, \text{Set})$ when category $\mathcal{A}$ is small and not otherwise?
Jan
24
accepted Yoneda Lemma, newbie question. How is $\theta_{F,A}(\alpha) = \alpha_A(1_A)$ an element of the set $FA$?
Jan
24
comment Yoneda Lemma, newbie question. How is $\theta_{F,A}(\alpha) = \alpha_A(1_A)$ an element of the set $FA$?
Oh, since $\alpha_A : \mathcal{A}(A, B) \to F(B)$, i see now. I was thinking too generally.
Jan
24
asked Yoneda Lemma, newbie question. How is $\theta_{F,A}(\alpha) = \alpha_A(1_A)$ an element of the set $FA$?
Jan
16
accepted $A_i \subset$ ring $R$ st $\Delta A_i \equiv \{ b-c: b,c \in A_i\} = $ an ideal of $R$, then $\bigcap_i (\Delta A_i) = \Delta (\bigcap_i A_i)$.
Jan
16
comment $A_i \subset$ ring $R$ st $\Delta A_i \equiv \{ b-c: b,c \in A_i\} = $ an ideal of $R$, then $\bigcap_i (\Delta A_i) = \Delta (\bigcap_i A_i)$.
Ah! Thanks... always making stupid mistakes. Your response was fast! Thank you.
Jan
16
accepted If $A_n \subset B_n$ for all $n \geq 1$, then “$\lim A_n \subset \lim B_n$”?
Jan
16
asked $A_i \subset$ ring $R$ st $\Delta A_i \equiv \{ b-c: b,c \in A_i\} = $ an ideal of $R$, then $\bigcap_i (\Delta A_i) = \Delta (\bigcap_i A_i)$.
Jan
16
asked If $A_n \subset B_n$ for all $n \geq 1$, then “$\lim A_n \subset \lim B_n$”?