Result

Subterm−

Expenditure

Subterm u

Expenditure

Subterm+

Expenditure

End

Money

Sum

Source

Beginning Money

αk(−)

αk(u)

αk(+)

γk

Ψk

Subterm− Revenue

ρk(−−)

ρk(−u)

ρk(−+)

βk(−)

Yk(−)

Subterm u Revenue

ρk(u−)

ρk(uu)

ρk(u+)

βk(u)

Yk(u)

Subterm+ Revenue

ρk(+−)

ρk(+u)

ρk(++)

βk(+)

Yk(+)

Sum

Xk(−)

Xk(u)

Xk(+)

Ωk