unfo - we a
- unfortunately it is only part of the overall problem ...
- unfortunately not much more is said about ...
- unfortunately the results are often discouraging because..
- unfortunately, ...
- unfortunately, our next task is of great complexity ...
- unfortunately, reducing ... is only part of the overall problem ...
- uniquely difficult to define ...
- unless otherwise qualified ...
- unless otherwise specified / stated/ mentioned ...
- unless otherwise specified, the details listed below ...
- unless the information is available, we won't get the answer ...
- unlike this process ...
- unlike using ...
- until about 12O years ago, it had nothing to do with ...
- until recent years, ...
- untypical was the following account of ...
- up to now ...
- up to the present ...
- upon a closer view ...
- using it under different circumstances we can offer a considerable variety of ...
- using the metaphor of ..., N. pointed out that ...
- using the same reasoning, N. argued that ...
- using the same reasoning, N. argued that ... .. ...vice versa ...
- usually the number of ... is relatively small ...
- variations in public opinion
- various authors have taken different approaches in an attempt to obtain ...
- various means of ... have been discussed in ...
- very briefly though, I’d like to point out ...
- very few methods find immediate application ...
- very often, of course, these both reasons coexist ...
- very often, when there is no regular ...
- very soon ...
- via theorem 2, we know that ...
- viewed in this way, ...
- virtually, ...
- virtually, ignoring it is ...
