"mathematically defined" is correct and usable in written English.
You can use it whenever something is expressed or understood according to a mathematical formula or definition. For example, "The area of a triangle is mathematically defined as A=1/2bh."
Mathematical models are often used as computational models an obvious example being a mathematically defined group of differential equations for which solutions can be derived computationally through simulation.
The simulation models of the system are mathematically defined.
The statistical equilibrium in GESTA is mathematically defined.
Distinguishability has been mathematically defined through different measures, which are addressed in this paper.
In this paper the problem is mathematically defined and proven NP-complete.
Even if a computer animation is intended to be viewed in two dimensions (as on a computer terminal), every object it presents must be mathematically defined in three.
A set of mathematically defined input functions was used to evaluate the efficacy of the separation method.
When average values were zero for the OM0, the relative change was set to an arbitrary value of 100% (circled in black) as these relative changes cannot be mathematically defined.
This allowed us to disentangle nearly identical copies of highly abundant repetitive elements, as evidenced by the good representation of both mathematically defined repeats and retrotransposon families (Extended Data Fig. 2c, d).
This chapter presents a view of the finite element method as a general discretization procedure of continuum problems posed by mathematically defined statements.
The workspace generation is formulated as a direct kinematic problem involving only two branches which are mathematically defined and related with the manipulator's assembly configurations.
