Sentence examples for several open problems from inspiring English sources

Several open problems are equally mentioned.

Finally, we discuss several open problems and state some conjectures.

Several open problems and current research topics are addressed.

Several open problems have been suggested for future research.

Based on our survey and analysis, we then point to several open problems.

Several open problems in areas of electrical and control engineering are offered.

Finally several important open problems are stated.

Several important open problems in large scale systems engineering are touched upon.

Finally, this paper presents several interesting open problems with future research directions for multi-population optimization methods.

This approach has lead to the resolution of several important open problems, as well as a simple alternative view and analysis of many previously suggested algorithms.

Far too much is known to permit a comprehensive survey, even within this limited scope, but there will be time to mention several interesting open problems and conjectures.