<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">M. BARTUSEK</style></author><author><style face="normal" font="default" size="100%">John R. Graef</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">LIMIT-POINT/LIMIT-CIRCLE PROBLEM FOR SUB-HALF-LINEAR SECOND ORDER DELAY DIFFERENTIAL EQUATIONS</style></title><secondary-title><style face="normal" font="default" size="100%">Dynamic Systems and Applications</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">34B20</style></keyword><keyword><style  face="normal" font="default" size="100%">34C11</style></keyword><keyword><style  face="normal" font="default" size="100%">34C15</style></keyword><keyword><style  face="normal" font="default" size="100%">34D05</style></keyword><keyword><style  face="normal" font="default" size="100%">34K11</style></keyword><keyword><style  face="normal" font="default" size="100%">34K12</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2011</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://acadsol.eu/dsa/articles/20/18-DSA-31-16.pdf</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">20</style></volume><pages><style face="normal" font="default" size="100%">17</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The authors investigate the limit-point and limit-circle properties of solutions of the delay differential equation a(t)|y ′ | p−1 y ′ ′ + r(t)  y ϕ(t)   λ sgn y ϕ(t)  = 0 where p ≥ λ ≥ 1, a(t) &amp;gt; 0, r(t) &amp;gt; 0, ϕ(t) ≤ t on R+, and limt→∞ ϕ(t) = ∞. The results generalize these properties for ordinary (non-delay) differential equations that were initiated by Hermann Weyl one hundred years ago for linear equations.&lt;/p&gt;
</style></abstract><section><style face="normal" font="default" size="100%">261</style></section></record></records></xml>