HELP Define if the indefinite article acquires additional lexical meaning in the following sentences. Translate the sentences into Ukrainian.

1. A problem, however, emerges from these assumptions. 2. At this point, though, an objection can be raised. 3. An example will illustrate some of these new concepts. 4. In a sense, of course, this is not a matter for argument. 5. First, a note on directionality. 6. The point is that there is a difference in this case. 7. Such an analysis is possible. 8. He has suggested that a solution might be to treat them as important. 9. A second, more compelling, argument can be made for the two independent claims. 10. This book appears at a time, when certain tensions are emerging between these two rather different approaches. 11. A way for retaining that assumption would be to saturate inherent properties from adherent ones. 12. It is a likely candidate for a general principle of the theory -- a question that must be resolved in any event. 13. And, lastly, one is likely to perceive an aura or atmosphere surrounding such a person's actions and expressions, which sets him apart in a way difficult to define. 14. In the very first sentence of the paper, there is a term that attracts out attention, especially now that we have become sensitized to it by our previous discussion of polarities. 15. We can now choose for the detailed study a concrete example by means of which to find further hints on how the scientist's personal characteristics interacted with his scientific work. 16. This leads the author to speak of a resistance to change, rather than to question the very notion of a process of simplification. 17. Yet, he continued to make some of the most seminal contributions to the field for a quarter of a century from 1905 on, with rarely a year going by in which he did not publish an article on this subject. 18. But I do not find these books very helpful for understanding the life or the work of a Fermi or an Einstein and even less for discerning how his personality and his scientific achievements interact.