The phrase "a more complex operation" is correct and usable in written English.
You can use it when describing a task or process that involves multiple steps or intricate details, indicating that it is not simple.
Example: "The project requires a more complex operation than we initially anticipated, involving several stages of development."
Alternatives: "a more intricate process" or "a more complicated task."
Bradshaw received injection treatment in his fractured right foot in February — as opposed to having a more complex operation — and said last week his feet felt great.
Or we could do an arterial bypass, a more complex operation that would save her leg but that might disable or even kill her before her surgical scars ever healed.
If he gets back a cipher that decrypts to his challenge message using d to decrypt it, he will know that it was in all probability created by someone knowing e and hence that the other communicant is probably A. Digitally signing a message is a more complex operation and requires a cryptosecure "hashing" function.
Here was a narrowly focused outfit – Compaq, a maker and seller of computer boxes — swallowing a more complex operation.
The difference of lattices is a more complex operation, described, for instance, in [22] where it is used to compute the minimum data storage of behavioral specifications.
This is consistent with our multi-step model (accumulation of an intermediate), and we believe this provides evidence for a more complex operation of the D1R CTS.
Here was a narrowly focused outfit — Compaq, a maker and seller of computer boxes — swallowing an older and more complex operation.
The reception of irregular migrants is a far bigger and more complex operation than the TV images show.
More complex operation like division is considered as multiplication operation [32].
The CLFRF mechanism is to randomly select duration from the lightest loading channel for MDAOP reservation, which has the advantage of simple and no more complex operation.
