Problem in understanding a system

[lucaski]

My professor gave me the task of replicate this system:


Equation: DYIELD-(ALPHA(1)+0*PYIELD(1))*DT

Equation: (DYIELD-(ALPHA(1)+0*PYIELD(1))*DT)*PYIELD

Equation: (DYIELD-(ALPHA(1)+0*PYIELD(1))*DT)^2-SIGMA(1)^2
*(PYIELD^2^(0))*DT
Equation: ((DYIELD-(ALPHA(1)+0*PYIELD(1))*DT)^2-SIGMA(1)^2
*(PYIELD^2^(0))*DT)*PYIELD

The system is composed by these 4 equations. The problem is that I don't undrestand why these equations don't have the equal symbol.

[EViews Gareth]

There's an implicit "=0"

[lucaski]

now I get it, thx