https://math.wvu.edu/morecolloquia
enXiaoxian Tang
https://math.wvu.edu/xiaoxian-tang-2-01-2019
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even" property="content:encoded"><p>Applying Algebraic Methods in Mathematical Biology</p>
<p><b>Date:</b> 2/1/2019<br /><b>Time:</b> 4:00PM-5:00PM<br /><b>Place:</b> 315 Armstrong Hall</p>
<p><b>Abstract:</b> Many challenging problems in mathematical biology, for instance, in biochemical reaction networks and phylogenetics, involve solving non-linear polynomial systems. Therefore, methods and algorithms in computational algebraic geometry are natural and powerful tools to deal with these problems. However, the existing tools in computer algebra systems have exponential complexities, which might not be applicable for huge systems from biology. One typical example is the multistationarity problem: whether a given biochemical reaction network has two or more positive steady states? In this talk, we develop a simple critical function method to determine multistationarity for a large class of networks arising from biology and to identify the parameter values for which the given network exhibits multistationarity. Particularly, networks having "binomial steady states" are widely seen in biochemistry. For these networks, we prove our method is much less expensive than standard real quantifier elimination methods in computational algebraic geometry. </p>
</div></div></div><div class="field field-name-field-date field-type-text field-label-above"><div class="field-label">Date, Location: </div><div class="field-items"><div class="field-item even">2019-02-01</div></div></div>Tue, 29 Jan 2019 09:19:12 +0000grandpoobah1493 at https://math.wvu.eduSanti Spadaro
https://math.wvu.edu/santi-spadaro-1-30-2019
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even" property="content:encoded"><p>On some problems inspired by Arhangel’skii’s Theorem</p>
<p><b>Date:</b> 1/30/2019<br /><b>Time:</b> 4:00PM-5:00PM<br /><b>Place:</b> 315 Armstrong Hall</p>
<p><b>Abstract:</b> Arhangel’skii’s 1969 theorem on the cardinality of compact first-countable spaces is a milestone in set-theoretic topology. Besides solving a 50 year old question of Alexandroff and Urysohn, it introduced techniques that are now standard in the field and opened many new problems which continue to inspire current research. We will speak about our recent solutions to some of these problems, including a question about covering properties of the G_delta topology on a compact space which was posed by Arhangel’skii himself in 1970. </p>
<p>Our talk is based on joint works with Paul Szeptycki and Angelo Bella.</p>
</div></div></div><div class="field field-name-field-date field-type-text field-label-above"><div class="field-label">Date, Location: </div><div class="field-items"><div class="field-item even">2019-01-30</div></div></div>Tue, 29 Jan 2019 09:15:40 +0000grandpoobah1492 at https://math.wvu.eduMichelle Homp
https://math.wvu.edu/michelle-homp_2018-11-30
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even" property="content:encoded"><p>Master of Arts for Teachers: A Mathematics Degree Designed with Teachers in Mind</p>
<p><b>Date:</b> 11/30/2018<br /><b>Time:</b> 3:30PM-4:30PM<br /><b>Place:</b> 315 Armstrong Hall</p>
<p><b>Abstract: </b> <a href="/pdfs/michelle-homp-11-30-2018.pdf"> View</a></p>
</div></div></div><div class="field field-name-field-date field-type-text field-label-above"><div class="field-label">Date, Location: </div><div class="field-items"><div class="field-item even">2018-11-30</div></div></div>Mon, 26 Nov 2018 21:40:42 +0000grandpoobah1470 at https://math.wvu.eduDavid Jorgensen
https://math.wvu.edu/david_jorgensen_2018-11-29
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even" property="content:encoded"><p>Beyond Matrix Factorizations</p>
<p><b>Date:</b> 11/29/2018<br /><b>Time:</b> 4:00PM-5:00PM<br /><b>Place:</b> 315 Armstrong Hall</p>
<p><b>Abstract: </b> <a href="/pdfs/dave-jorgensen-11-29-2018.pdf"> View</a></p>
<p><a href="https://www.researchgate.net/profile/David_Jorgensen2"> David Jorgensen </a></p>
</div></div></div><div class="field field-name-field-date field-type-text field-label-above"><div class="field-label">Date, Location: </div><div class="field-items"><div class="field-item even">2018-11-29</div></div></div>Mon, 26 Nov 2018 06:01:34 +0000grandpoobah1468 at https://math.wvu.eduWill Hall
https://math.wvu.edu/will-hall_2018-11-28
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even" property="content:encoded"><p>Math Education Colloquium</p>
<p><b>Date:</b> 11/28/2018<br /><b>Time:</b> 4:30PM-5:30PM<br /><b>Place:</b> 407 Armstrong Hall</p>
<p><b>Abstract: </b> The biological and life sciences make up 30% of traditional Calculus I students (Bressoud, 2015) and we often build entire courses for these students in which calculus is set within contexts relevant for the biological and life sciences. However, we know very little about the role context plays in how students reason about calculus ideas within the biological and life sciences. These contexts are diverse yet tied together in their application to the life sciences and worthy of specific consideration. </p>
<p>I gave a set of five calculus accumulation tasks to twelve undergraduate life science majors. The data analyzed via open coding from a constructivist grounded theory approach (Charmaz, 2000) and a new analytic tool, local theory diagrams was developed. Results indicate problem context influenced students’ assessment of the viability of their solution strategies as well as enabled them to reason through apparent contradictions in their work. In this talk I will share some of the details from my study and we will spend some time thinking through context-based reasoning within calculus. </p>
</div></div></div><div class="field field-name-field-date field-type-text field-label-above"><div class="field-label">Date, Location: </div><div class="field-items"><div class="field-item even">2018-11-28</div></div></div>Wed, 28 Nov 2018 03:55:10 +0000grandpoobah1474 at https://math.wvu.eduJocelyn Quaintance
https://math.wvu.edu/jocelyn_quaintance_2018-11-14
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even" property="content:encoded"><div class="tex2jax"><p>Hilbert Spaces, Hilbert Bases, and Fourier Series</p>
<p><b>Date:</b> 11/14/2018<br />
<b>Time:</b> 4:00PM-5:00PM<br />
<b>Place:</b> 315 Armstrong Hall</p>
<p><b>Abstract: </b>In honor of Salah Hamad's dissertation defense, I will give a graduate student accessible<br />
talk discussing the basic theory of Hilbert spaces. In particular, I will define what it means for a Hilbert space<br />
$E$ to have a Hilbert basis $(u_k)_{k\in K}$ and show how the concept of a Hilbert basis provides the canonical representation<br />
of $E$ in terms of $l^2(K)$, namely the famous Riesz-Fischer theorem. Then I will discuss the connection between Hilbert bases and<br />
the Fourier series of a square period function, ending with a brief recap of Joseph Fourier's fascinating life.</p>
</div></div></div></div><div class="field field-name-field-date field-type-text field-label-above"><div class="field-label">Date, Location: </div><div class="field-items"><div class="field-item even">2018-11-14</div></div></div>Thu, 08 Nov 2018 07:17:37 +0000grandpoobah1464 at https://math.wvu.eduDong Ye
https://math.wvu.edu/2018-11-09_dong-ye
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even" property="content:encoded"><p>Cyclability and Linkage for Graphs with Local Conditions</p>
<p>Date: 11/9/2018<br />
Time: 3:30PM-4:30PM<br />
Place: 315 Armstrong Hall</p>
<p><b>Abstract</b>: A graph G is k-cyclable if for any given k vertices, G has a cycle through all the given k vertices. It is well known that a k-connected graph is k-cyclable. A graph G is k-ordered or C_k-linked if for any give k vertices in an ordering, G has a cycle through all the given k vertices in the ordering. More general, a graph in H-linked if there is a injective map f which maps vertices of H to G such that G has a subgraph homeomorphic to H and rooted at f(V(H)). In this talk, we present some results on cyclability and linkage for graphs with extra local conditions, such as, claw-free and locally Hamiltonian etc. </p>
<p><a target="_blank" href="https://www.researchgate.net/profile/Dong_Ye"> Dong Ye</a></p>
<p>All are welcome.</p>
</div></div></div><div class="field field-name-field-date field-type-text field-label-above"><div class="field-label">Date, Location: </div><div class="field-items"><div class="field-item even">2018-11-09</div></div></div>Fri, 02 Nov 2018 11:38:15 +0000grandpoobah1462 at https://math.wvu.eduWilliam "Bus" Jaco
https://math.wvu.edu/william-jaco_2018-11-09
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even" property="content:encoded"><p>Student Learning and Success in Entry-level Mathematics: Math Pathways, Corequisite Instruction, and Mathematics Learning by Inquiry</p>
<p><b>Date:</b> 11/09/2018<br /><b>Time:</b> 3:30PM-4:30PM<br /><b>Place:</b> 121 Armstrong Hall</p>
<p><b>Abstract: </b>We will facilitate a discussion of the program led by the Oklahoma State Regents for Higher Education to enhance student learning and success in mathematics across Oklahoma. We will discuss the structures of Math Pathways (to Completion) and Corequisite Instruction (at Scale) that are being implemented at all public institutions of higher education across Oklahoma, taking a closer look at these structural changes at OSU. While these structural changes are not easy, they are fairly straightforward and from them we are seeing measurable successes. However, a consequence of these changes and the need to address the Task Force Goals for enhanced student engagement, increased applications of mathematics and support for academic success skills dictate necessary classroom instructional changes that will require a shift in departmental culture and faculty and advisor professional development. The newly funded Mathematics Inquiry Project is a statewide program to address these challenging changes.</p>
<p><a target="_blank" href="https://www.researchgate.net/profile/William_Jaco"> William Jaco</a></p>
</div></div></div><div class="field field-name-field-date field-type-text field-label-above"><div class="field-label">Date, Location: </div><div class="field-items"><div class="field-item even">2018-11-09</div></div></div>Thu, 08 Nov 2018 07:23:54 +0000grandpoobah1465 at https://math.wvu.eduMingquan Zhan
https://math.wvu.edu/2018-10-25_mingquan-zhan
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even" property="content:encoded"><p>On s-hamiltonian-connected line graphs</p>
<p>Date: 10/25/2018<br />
Time: 3:45PM-4:45PM<br />
Place: 315 Armstrong Hall</p>
<p><b>Abstract</b>: <a href="/pdfs/mingquan-zhan-abstract.pdf"> View </a></p>
<p><a target="_blank" href="https://www.researchgate.net/profile/Mingquan_Zhan"> Mingquan Zhan</a></p>
<p>All are welcome.</p>
</div></div></div><div class="field field-name-field-date field-type-text field-label-above"><div class="field-label">Date, Location: </div><div class="field-items"><div class="field-item even">2018-10-25</div></div></div>Mon, 17 Sep 2018 20:51:50 +0000grandpoobah1437 at https://math.wvu.eduLiang Hong
https://math.wvu.edu/2018-10-19_liang-hong-actuarial
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even" property="content:encoded"><p>On prediction of future insurance claims when the model is uncertain</p>
<p>Date: 10/19/2018<br />
Time: 3:30PM-4:30PM<br />
Place: 315 Armstrong Hall</p>
<p><b>Abstract</b>: Predictive modeling is arguably one of the most important tasks actuaries face in their day-to-day work. In practice, actuaries may have a number of reasonable models to consider, all of which will provide different predictions. The most common strategy is to first use some kind of model selection tool to select a ``best model,'' and then use that model to make predictions. However, there is reason to be concerned about the use of the classical distribution theory to develop predictions because these ignore the selection effect. Since accuracy of predictions is crucial to the insurer's pricing and solvency, care is needed to develop valid prediction methods. In this talk, we undertake an investigation of the effects of model selection on the validity of classical prediction tools and make some recommendations for practitioners.</p>
<p><a target="_blank" href="https://sites.google.com/a/rmu.edu/lhong/"> Liang Hong</a></p>
<p>Dr. Hong received his PhD in mathematics from Purdue University. He has received grants from the Casualty Actuarial Society (CAS), Society of Actuaries (SOA), and State Farm Insurance Company; and he has given research talks at several Center for Actuarial Excellence (CAE) schools including Drake University, Georgia State University, Temple University, University of Waterloo, University of Wisconsin, Madison.</p>
<p>All are welcome.</p>
</div></div></div><div class="field field-name-field-date field-type-text field-label-above"><div class="field-label">Date, Location: </div><div class="field-items"><div class="field-item even">2018-10-19</div></div></div>Tue, 02 Oct 2018 14:32:14 +0000grandpoobah1450 at https://math.wvu.edu