Triangulated Structures Induced by Triangle Functors |
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Authors: | Zhao Zhibing Du Xianneng Bao Yanhong |
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Institution: | School of Mathematical Sciences, Anhui University, Hefei 230601, China.,School of Mathematical Sciences, Anhui University, Hefei 230601, China. and Corresponding author. School of Mathematical Sciences, Anhui University, Hefei 230601, China. |
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Abstract: | Given a triangle functor $F\colon \A \to \B$, the authors introduce
the half image $\hIm F$, which is an additive category closely
related to $F$. If $F$ is full or faithful, then $\hIm F$ admits a
natural triangulated structure. However, in general, one can not
expect that $\hIm F$ has a natural triangulated structure. The aim
of this paper is to prove that $\hIm F$ admits a natural
triangulated structure if and only if $F$ satisfies the condition
(SM). If this is the case, $\hIm F$ is triangle-equivalent to the
Verdier quotient $\A/\Ker F$. |
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Keywords: | Triangulated category Triangle functor Half image Verdier quotient |
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