For the figure eight knot, we show that slopes with even numerator are slopes of immersed surfaces covered by incompressible, boundary-incompressible embeddings in some finite cover.  2000 Elsevier Science B.V. All rights reserved.

The Friedman--Mineyev theorem, earlier known as the (strengthened) Hanna Neumann conjecture, gives a sharp estimate for rank of intersection two subgroups in free group. We obtain an analogue this inequality any virtually group (or, more generally, containing product left-orderable groups finite-index subgroup).

the polysemy and lexical similarity of the linguistic structures may lead to ambiguity in the speech and latency. but since a language needs to be away from this deficiency so as to be functional and useful, it needs to be cleansed from such meaning latencies based on the available indications. one indication that can be categorized among the verbal indications is the sentence intonation. by ch...

background and aim: with regard to the shortage of proper materials in persian for the evaluation of speech perception in children, this study aimed to develop the persian version of the bkb sentence test, and determine its content validity in normal persian speaking children aged 6-12 years. methods: this study was an applied research. the study procedure comprised sentence construction, deter...