Just past 5 a.m., in the still-dim living room, I lift a steaming mug to my lips.Mornings in your 50s come early. Staying up ...

THE “Lezioni di calcolo differenziale assoluto” by Prof. Levi-Cività were published in Italian in 1925. This account of the foundations of the absolute differential calculus has now been translated ...

A basic text in differential-difference and functional-differential equations used by mathematicians and physicists in attacking problems involving the description and prediction of the behavior of ...

Environmental differential pay is for wage grade employees the counterpart to hazardous duty pay for general schedule employees. Differentials are paid according to schedules that vary the payment ...