1. Moment Generating Functions and Central Moments.- 2.Quantitative Estimates.- 3.Basics of Post-Quantum Calculus.- 4. Integral Operators.- 5. Univariate Grüss and Ostrowski type inequalities for positive linear operators.- 6. Bivariate Grüss-type inequalities for positive linear operators.- 7. Estimates for the differences of positive linear operators.- 8. Bivariate operators of discrete and integral type.- 9. Convergence of GBS Operators.