The phrase "a simple approximation of" is correct and usable in written English.
It can be used when describing a basic or rough estimate of something, often in mathematical or scientific contexts.
Example: "The formula provides a simple approximation of the actual value, making it easier to understand the concept."
Alternatives: "a basic estimate of" or "a rough calculation of".
To our knowledge, the paper by Degond et al. [45] contains the first attempt to construct a simple approximation of (vert A_{ij}vert) by means of a polynomial that approximates (vert xvert) without interpolating it exactly on the eigenvalues.
The result is a simple approximation of the probability of failure without any limitation becoming feasible.
A simple approximation of ground effect is analyzed for two cases: (1) stationary point source and (2) moving line source (train).
The susceptibility to deformation localization of simple cubic arrangements of struts, which are a simple approximation of the micro-architecture in cancellous bone, is analyzed.
A simple approximation of the acute effects of tDCS posits that anodal currents lead to a large-scale net depolarization of pyramidal neurons' soma within a region, and cathodal currents to a net soma hyperpolarization27, thereby influencing neuronal firing rates27,28,29.
whether such "oscillators" are just a simple approximation of a much complex phenomenon, or are a sign of another more physically based model like the dynamo model (or other models).
In FEM, the whole object is discretised and each element will have a simpler approximation of the solution which will be joined later with other elements of the same object to form the global solution (Hughes 1987).
Because an accurate approximation of the true APPs is less critical for the proper operation of the EM algorithm, we propose a simpler approximation of the APP computation with roughly half the complexity of max-log MAP and with substantially less memory requirements.
This probability can be computed using Equation 72 above, but the large sums of hypergeometric functions suggest that a simpler approximation of the heteroplasmy distribution may be desirable, both for computational simplicity and intuitive interpretability.
Then we conduct computational studies of several non-flat patterns and suggest a simple approximation for compliances of non-flat cracks.
Therefore, by some simple observations, we propose a simple approximation for the behavior of R1 as a function of Q as follows.
