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  "body": "\n## Definition\n\nLet $R$ be a [[binary relation|08EJC6Q25H]] on a set $A$.\nThe relation $R$ is reflexive when $a \\mathrel{R} a$ for each $a \\in A$.\n\n## Remarks\n\nOn $\\mathbb{R}$, the relation $\\le$ is reflexive and the relation $\u003c$ is not.\nA relation is irreflexive when no element is related to itself.\nReflexivity is one of the conditions for an [[equivalence relation|0SGTMBEWRF]] and for a [[partial order|011C29Q1S1]].\n\n## Explanations\n\n### L1 human\n\nIn the graph of a reflexive relation, each point has a loop to itself.\n\"Has the same birthday as\" is reflexive, because each person has the same birthday as themselves.\n",
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