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reflexive_relations [2010/07/29 15:46]
127.0.0.1 external edit
reflexive_relations [2012/06/16 21:54] (current)
jipsen
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reflexive:  $xRx$ reflexive:  $xRx$
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-Remark: This is a template. 
-If you know something about this class, click on the ``Edit text of this page'' link at the bottom and fill out this page. 
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-It is not unusual to give several (equivalent) definitions. Ideally, one of the definitions would give an irredundant axiomatization that does not refer to other classes. 
==Morphisms== ==Morphisms==
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Feel free to add or delete properties from this list. The list below may contain properties that are not relevant to the class that is being described. Feel free to add or delete properties from this list. The list below may contain properties that are not relevant to the class that is being described.
-^[[Classtype]]                        |quasivariety +^[[Classtype]]                        |variety
-^[[Quasiequational theory]]           | |+^[[Equational theory]]           |decidable |
^[[First-order theory]]               | | ^[[First-order theory]]               | |
^[[Locally finite]]                   |yes | ^[[Locally finite]]                   |yes |
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====Superclasses==== ====Superclasses====
-  [[Directed graphs]] supervariety+[[Directed graphs]] supervariety