On <math xmlns="http://www.w3.org/1998/Math/MathML" id="M1"> <msub> <mrow> <mfenced open="(" close=")"> <mrow> <mi>η</mi> <mo>,</mo> <mi>γ</mi> </mrow> </mfenced> </mrow> <mrow> <mfenced open="(" close=")"> <mrow> <mi>f</mi> <mo>,</mo> <mi>g</mi> </mrow> </mfenced> </mrow> </msub> </math>-Contractions in Extended <math xmlns="http://www.w3.org/1998/Math/MathML" id="M2"> <mi mathvariant="fraktur">b</mi> </math>-Metric Spaces
Advances in mathematical physics