Fundamentals of Supply Chain Theory, 2nd Edition

Appendix C Helpful Formulas

C.1 Positive and Negative Parts

For any number , we define the positive part and negative part of x as, respectively:

(Some authors use .)

The following identities hold:

(C.1)

(C.2)

(C.3)

(C.4)

For any , we have:

(C.5)

(C.6)

If , then

(C.7)

C.2 Standard Normal Random Variables

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