Sentence examples for second difficulty is to from inspiring English sources

The first is proving that the approximating problems which are nondegenerate admits a solution, the second difficulty is to establish uniform estimates for these solutions.

The second difficulty is to explain an unparalleled richness of Apicomplexans, a group with very few known free-living representatives.

The second difficulty is to identify a good for which a value can be attributed in the framework of an experimental design, and which can be compared for rare and common species, without endangering the species concerned.

The decisions he now faces are so complex that the first difficulty is to define the problem correctly.

Since very different concerns motivate the need for stabilization in compressible and incompressible flows, the first difficulty is to design a stabilization operator suitable for both types of flows especially in mixed elements.

A second difficulty is related to the limitations of the existing in vitro anemometry techniques.

A second difficulty is related to the discretized computational problem, for which additional numerical boundary conditions that are consistent with the unsteady flow equations at the boundaries are required for closure.

The second difficulty is in their expression in response to variety of stress conditions that are not related to toxicity and, therefore, in how to isolate and ascertain the cause from the response.