Lorentzian Approximations and Gauss–Bonnet Theorem for <math xmlns="http://www.w3.org/1998/Math/MathML" id="M1"> <mi>E</mi> <mfenced open="(" close=")" separators="|"> <mrow> <mn>1,1</mn> </mrow> </mfenced> </math> with the Second Lorentzian Metric
Journal of mathematics