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<span style="font-family:'Times New Roman',serif; font-size:11pt">Sayın liste üyeleri,</span></p>
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<span style="font-family:'Times New Roman',serif; font-size:11pt">Gebze Teknik Üniversitesi, Matematik Bölümü Genel Seminerleri kapsamında,</span></p>
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<span style="font-family:'Times New Roman',serif"><span style="font-size:11pt">13 Mayıs Cuma günü saat 14:00'da Yrd. Dr. Fatih ECEVİT</span><br>
<span style="font-size:11pt">(Boğaziçi Üniversitesi) Matematik Bölümü seminer salonunda bir seminer</span></span></p>
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<span style="font-family:'Times New Roman',serif; font-size:11pt">verecektir. Seminerin detayları aşağıda olup tüm ilgilenenler davetlidir.</span></p>
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<span style="font-family:'Times New Roman',serif; color:rgb(33,33,33); font-size:11pt">Başlık: Frequency-adapted boundary element methods for single-scattering problems</span></p>
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<span style="font-family:'Times New Roman',serif; color:rgb(33,33,33); font-size:11pt">Özet: We introduce a class of hybrid boundary element methods for the solution of sound soft scattering problems. To facilitate the applicability of our algorithms throughout
the entire frequency spectrum, we have enriched our Galerkin approximation spaces, through incorporation of oscillations in the incident field of radiation, into the algebraic and trigonometric polynomial approximation spaces. We utilize, alternatively, a
change of variables around the transition regions so as to guarantee that the approximation spaces are adapted to the asymptotic behavior of solutions.The resulting methodologies have three distinctive properties. Indeed, from a theoretical point of view,
they can be tuned to demand only an O(k^a) increase (for any a > 0) in the number of degrees of freedom to maintain a fixed accuracy with increasing wavenumber k. Perhaps more importantly, from a practical point of view, they give rise to linear systems with
significantly enhanced condition numbers and this, in turn, allows for more accurate solutions if desired.</span></p>
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<span style="font-family:'Times New Roman',serif; font-size:11pt"><br>
Saygılarımızla,</span><span style="font-family:'Times New Roman',serif"></span></p>
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<span style="font-family:'Times New Roman',serif; font-size:11pt">Dear all,</span></p>
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<span style="font-family:'Times New Roman',serif"><span style="font-size:11pt">There will be a seminar in Gebze Technical University on 13th of</span><br>
<span style="font-size:11pt">May by Assistant. Dr. Fatih ECEVİT (Bosphorus University)</span><br>
<span style="font-size:11pt">Time and place: At 14:00 in Department of Mathematics Building I, Auditorium.</span></span></p>
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<span style="font-family:'Times New Roman',serif; color:rgb(33,33,33); font-size:11pt">Title: Frequency-adapted boundary element methods for single-scattering problems</span></p>
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<span style="font-family:'Times New Roman',serif; color:rgb(33,33,33); font-size:11pt">Abstract: We introduce a class of hybrid boundary element methods for the solution of sound soft scattering problems. To facilitate the applicability of our algorithms throughout
the entire frequency spectrum, we have enriched our Galerkin approximation spaces, through incorporation of oscillations in the incident field of radiation, into the algebraic and trigonometric polynomial approximation spaces. We utilize, alternatively, a
change of variables around the transition regions so as to guarantee that the approximation spaces are adapted to the asymptotic behavior of solutions.The resulting methodologies have three distinctive properties. Indeed, from a theoretical point of view,
they can be tuned to demand only an O(k^a) increase (for any a > 0) in the number of degrees of freedom to maintain a fixed accuracy with increasing wavenumber k. Perhaps more importantly, from a practical point of view, they give rise to linear systems with
significantly enhanced condition numbers and this, in turn, allows for more accurate solutions if desired.</span></p>
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