Revise guidance to require a minimum upper bound for supported ranks

PR-URL: data-apis#702 Reviewed-by: Ralf Gommers <[email protected]> Reviewed-by: Leo Fang <[email protected]>
kgryte · Nov 30, 2023 · 5555d41 · 5555d41
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commit 5555d41
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diff --git a/spec/draft/API_specification/array_object.rst b/spec/draft/API_specification/array_object.rst
@@ -7,7 +7,7 @@ Array object
 
 A conforming implementation of the array API standard must provide and support an array object having the following attributes and methods.
 
-Furthermore, a conforming implementation of the array API standard must support array objects of arbitrary rank ``N`` (i.e., number of dimensions), where ``N`` is greater than or equal to zero.
+Furthermore, a conforming implementation of the array API standard must support, at minimum, array objects of rank (i.e., number of dimensions) ``0``, ``1``, ``2``, ``3``, and ``4`` and must explicitly document their maximum supported rank ``N``.
 
 .. note::
     Conforming implementations must support zero-dimensional arrays.