Kang and M¨uller [7] proved that recognizing graphs of any fixed dot product dimension d ≥ 2 is NP-hard (membership in NP is still open). However, Fiduccia et al.
Kang and M¨uller [7] proved that recognizinggraphs of any fixed dot product dimension d ≥ 2 is NP-hard (membership inNP is still open). However, Fiduccia et al.