In ZF, uncountable Hindman theorems fail for additive R and uncountable-dim Q-vector spaces (under DC if non-well-orderable); Owings configurations admit positive results under AD.
Zhang,Monochromatic sumset without the use of large cardinals, Fundamenta Mathemat- icae250(2020), 243–252
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Hindman and Owings-like theorems without the Axiom of Choice
In ZF, uncountable Hindman theorems fail for additive R and uncountable-dim Q-vector spaces (under DC if non-well-orderable); Owings configurations admit positive results under AD.