added hyperlink to Rudolf-E. Hoffmann (here) and copied the item to that author-page
]]>added hyperlinkg to Peter I. Booth (here) and copied the item to that page
]]>Added a reference, Sequences of adjoint functors, that gives many examples of adjoint chains, of arbitrary length.
]]>added commentary and proper hyperlinking to the first couple of references
]]>a reference to add (here and at Wirthmüller context) when the editing functionality is back:
]]>We exhibit an interesting pattern of symmetry in the existence of adjoint functors between compactly generated tensor-triangulated categories, which leads to a surprising trichotomy: There exist either exactly three adjoints, exactly five, or infinitely many.
Mention “adjoint chain” terminology.
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