Identity element: Difference between revisions

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3 bytes removed ,  16:24, 9 January 2020
m
(→‎Left and right identities: Prove left and right identities can't be distinct)
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| [[Take]] || <source lang=apl inline>↑</source> || <source lang=apl inline>⍬</source> or <source lang=apl inline>⍴P</source>|| {{Yes}} || {{No}} ||
| [[Take]] || <source lang=apl inline>↑</source> || <source lang=apl inline>⍬</source> or <source lang=apl inline>⍴P</source>|| {{Yes}} || {{No}} ||
|-
|-
| [[Squad Indexing]] || <source lang=apl inline>⌷</source> || <source lang=apl inline>⍬</source> or <source lang=apl inline>⍳¨⍴P</source>|| {{Yes}} || {{No}} ||
| [[Squad Index]] || <source lang=apl inline>⌷</source> || <source lang=apl inline>⍬</source> or <source lang=apl inline>⍳¨⍴P</source>|| {{Yes}} || {{No}} ||
|-
|-
| [[Without]] || <source lang=apl inline>~</source> || <source lang=apl inline>0⌿P</source> || {{No}} || {{Yes}} || <source lang=apl inline>1≤≢⍴Y</source>
| [[Without]] || <source lang=apl inline>~</source> || <source lang=apl inline>0⌿P</source> || {{No}} || {{Yes}} || <source lang=apl inline>1≤≢⍴Y</source>

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