<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mfenced open="(" close=")" separators="|"><mml:mrow><mml:mi mathvariant="normal">Φ</mml:mi><mml:mo>,</mml:mo><mml:mi mathvariant="normal">Ψ</mml:mi></mml:mrow></mml:mfenced></mml:math><scp>-</scp>Weak Contractions in Neutrosophic Cone Metric Spaces via Fixed Point Theorems
Mathematical problems in engineering