From itabrunke@zedat.fu-berlin.de Tue Jul 06 20:56:30 2021 Received: from outpost1.zedat.fu-berlin.de ([130.133.4.66]) by list1.zedat.fu-berlin.de (Exim 4.94) for facets-of-complexity@lists.fu-berlin.de with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (envelope-from ) id 1m0qFB-002Tps-Hc; Tue, 06 Jul 2021 20:56:29 +0200 Received: from inpost2.zedat.fu-berlin.de ([130.133.4.69]) by outpost.zedat.fu-berlin.de (Exim 4.94) for facets-of-complexity@lists.fu-berlin.de with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (envelope-from ) id 1m0qFB-002bIQ-Ed; Tue, 06 Jul 2021 20:56:29 +0200 Received: from ip5f5af575.dynamic.kabel-deutschland.de ([95.90.245.117] helo=[192.168.0.2]) by inpost2.zedat.fu-berlin.de (Exim 4.94) for facets-of-complexity@lists.fu-berlin.de with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (envelope-from ) id 1m0qFB-000CCc-6z; Tue, 06 Jul 2021 20:56:29 +0200 From: Ita Brunke To: facets-of-complexity@lists.fu-berlin.de Message-ID: <92d5df80-57a0-7908-254c-cb6f28b741b0@inf.fu-berlin.de> Date: Tue, 6 Jul 2021 20:56:29 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:52.0) Gecko/20100101 Firefox/52.0 SeaMonkey/2.49.5 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="------------E00298745C431DB49C7812D0" X-Original-Sender: i.brunke@inf.fu-berlin.de X-Originating-IP: 95.90.245.117 X-ZEDAT-Hint: A X-purgate: clean X-purgate-type: clean X-purgate-ID: 151147::1625597789-00033A36-AFE15FA6/0/0 X-Bogosity: Ham, tests=bogofilter, spamicity=0.003793, version=1.2.4 X-Spam-Flag: NO X-Spam-Status: No, score=-50.0 required=5.0 tests=ALL_TRUSTED,HTML_MESSAGE X-Spam-Checker-Version: SpamAssassin 3.4.6 on Palau.ZEDAT.FU-Berlin.DE X-Spam-Level: Subject: [Facets-of-complexity] Invitation & Link to Monday Lecture & Colloquium - July 12th 2021 X-BeenThere: facets-of-complexity@lists.fu-berlin.de X-Mailman-Version: 2.1.29 Precedence: list List-Id: announcements of Monday lectures and other events List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Jul 2021 18:56:30 -0000 This is a multi-part message in MIME format. --------------E00298745C431DB49C7812D0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit You are cordially invited to our last Monday Lecture & Colloquium in summer term, on July 12th at 14:15 h & 16:00 h, online via Zoom. Invitation link: https://tu-berlin.zoom.us/j/69716124232?pwd=dzFlcTFHMmFXRTE5QmZLaEV5N0FRUT09 No password is required. *_Online via_: Zoom - Invitation* *_Time_: **Monday, July 12th - 14:15 h* *_Lecture_: Frédéric Havet (INRIA Sophia-Antipolis)* *_Title_: Unavoidability and universality of digraphs* *_Abstract_:* A digraph F is n-unadoidable} (resp. n-universal) if it is contained in every tournament of order n (resp. n-chromatic digraph). Well-known theorems imply that there is an n_F such that F is n_F -unavoidable (resp. n_F -universal) if and only if F is acyclic, (resp. an oriented forest). However, determining the smallest n_F for which it occurs is a challenging question. In this talk, we survey the results on unavoidability and universality and detail some recent recults obtained with various co-authors. * Break!* *_Time_: **Monday, **July 12th**- 16:00 h s.t.* *_Colloquium_: Raphael Steiner (Technische Universität Berlin)* *_Title_: The dichromatic number-a survey* *_Abstract_:* The dichromatic number of a digraph is the smallest number of acyclic subsets of vertices (not spanning a directed cycle) that can be used to cover its vertex-set. This parameter is a natural extension of the chromatic number to directed graphs and has been introduced in 1980 by Erdös and Neumann-Lara. Since 2000, many groups of authors have studied this parameter intensively and in various settings. In this talk, I will give a small survey of this topic, which has concerned me quite a bit in the last 3-epsilon years. I will also mention own results obtained during my PhD at appropriate places. --------------E00298745C431DB49C7812D0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit

You are cordially invited to our last Monday Lecture & Colloquium in summer term, on July 12th at 14:15 h & 16:00 h, online via Zoom.

Invitation link:
https://tu-berlin.zoom.us/j/69716124232?pwd=dzFlcTFHMmFXRTE5QmZLaEV5N0FRUT09
No password is required.

Online via:
Zoom - Invitation

Time: Monday, July 12th - 14:15 h

Lecture: Frédéric Havet (INRIA Sophia-Antipolis)

Title: Unavoidability and universality of digraphs

Abstract:

A digraph F is n-unadoidable} (resp. n-universal) if it is contained in every tournament of order n (resp. n-chromatic digraph). Well-known theorems imply that there is an nF such that F is nF-unavoidable (resp. nF-universal) if and only if F is acyclic, (resp. an oriented forest). However, determining the smallest nF for which it occurs is a challenging question. In this talk, we survey the results on unavoidability and universality and detail some recent recults obtained with various co-authors.


Break!

Time: Monday, July 12th - 16:00 h s.t.

Colloquium: Raphael Steiner (Technische Universität Berlin)

Title: The dichromatic number-a survey

Abstract:

The dichromatic number of a digraph is the smallest number of acyclic subsets of vertices (not spanning a directed cycle) that can be used to cover its vertex-set. This parameter is a natural extension of the chromatic number to directed graphs and has been introduced in 1980 by Erdös and Neumann-Lara. Since 2000, many groups of authors have studied this parameter intensively and in various settings. In this talk, I will give a small survey of this topic, which has concerned me quite a bit in the last 3-epsilon years. I will also mention own results obtained during my PhD at appropriate places.
--------------E00298745C431DB49C7812D0-- From itabrunke@zedat.fu-berlin.de Wed Sep 08 15:02:37 2021 Received: from outpost1.zedat.fu-berlin.de ([130.133.4.66]) by list1.zedat.fu-berlin.de (Exim 4.94) for facets-of-complexity@lists.fu-berlin.de with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (envelope-from ) id 1mNxDk-000686-SZ; Wed, 08 Sep 2021 15:02:32 +0200 Received: from inpost2.zedat.fu-berlin.de ([130.133.4.69]) by outpost.zedat.fu-berlin.de (Exim 4.94) for facets-of-complexity@lists.fu-berlin.de with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (envelope-from ) id 1mNxDk-0002vL-Q1; Wed, 08 Sep 2021 15:02:32 +0200 Received: from ip5f5af717.dynamic.kabel-deutschland.de ([95.90.247.23] helo=[192.168.0.2]) by inpost2.zedat.fu-berlin.de (Exim 4.94) for facets-of-complexity@lists.fu-berlin.de with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (envelope-from ) id 1mNxDk-003I9S-8h; Wed, 08 Sep 2021 15:02:32 +0200 To: facets-of-complexity@lists.fu-berlin.de From: "I.Brunke" Message-ID: <402d063f-d284-dcd6-7b3a-98edbd53c440@fu-berlin.de> Date: Wed, 8 Sep 2021 15:02:32 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0 SeaMonkey/2.53.8.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Antivirus: Avast (VPS 210908-2, 8.9.2021), Outbound message X-Antivirus-Status: Clean X-Original-Sender: i.brunke@fu-berlin.de X-Originating-IP: 95.90.247.23 X-purgate: clean X-purgate-type: clean X-purgate-ID: 151147::1631106152-0003C807-99FAD197/0/0 X-Bogosity: Ham, tests=bogofilter, spamicity=0.007528, version=1.2.4 X-Spam-Flag: NO X-Spam-Status: No, score=-50.0 required=5.0 tests=ALL_TRUSTED X-Spam-Checker-Version: SpamAssassin 3.4.6 on Tokelau.ZEDAT.FU-Berlin.DE X-Spam-Level: Subject: [Facets-of-complexity] Announcement: Thematic Mini-Conference: Stochastic Topology, September 21-22, 2021 X-BeenThere: facets-of-complexity@lists.fu-berlin.de X-Mailman-Version: 2.1.29 Precedence: list List-Id: announcements of Monday lectures and other events List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 Sep 2021 13:02:37 -0000 Dear colleagues, We wish to announce the    Thematic Mini-Conference  Stochastic Topology,  September 21 + 22, 2021                              ------------------- of the    Thematic Einstein Semester    "Geometric and Topological Structure of Materials"    https://www3.math.tu-berlin.de/mathplus/TES-Summer2021/    TU Berlin, April-September 2021    Tuesday, September 21, 2021    ---------------------------    Time Zone: Berlin Time (Central European Summer Time, CEST)     * 04:00 pm to 04:40 pm,  Roy Meshulam          (Technion)     * 04:50 pm to 05:30 pm,  Sayan Mukherjee       (Duke U)     * 06:00 pm to 06:40 pm,  Érika Roldán          (TU München/EPFL)     * 06:50 pm to 07:30 pm,  Andrew Newman         (Carnegie Mellon)    Wednesday, September 22, 2021    -----------------------------    Time Zone: Berlin Time (Central European Summer Time, CEST)     * 04:00 pm to 04:40 pm,  Matthew Kahle         (Ohio State U)     * 04:50 pm to 05:30 pm,  Omer Bobrowski        (Technion)     * 06:00 pm to 06:40 pm,  Yuval Peled           (Courant Institute)     * 06:50 pm to 07:30 pm,  Benjamin Schweinhart  (George Mason U)    For titles and abstracts please see    https://www3.math.tu-berlin.de/mathplus/TES-Summer2021/ Participation: ------------- free Registration: ------------ Please register for the semester activities via this form: https://docs.google.com/forms/d/e/1FAIpQLSdW_OVSvdTWHsZHdzqrTTvd54pTaCCnu6Snw_ui7TOT4XbHkA/viewform Registered participants will receive the links for the semester by e-mail. Upcoming Thematic Mini-Conference: --------------------------------- September 28 + 29, 2021, Computational Topology and Machine Learning Organizers: ----------     Myfanwy Evans (U Potsdam)     Kathryn Hess Bellwald (EPFL)     Frank Lutz (TU Berlin)     Dmitriy Morozov (LBNL)     Ileana Streinu (Smith College) -- -- Diese E-Mail wurde von Avast Antivirus-Software auf Viren geprüft. https://www.avast.com/antivirus From itabrunke@zedat.fu-berlin.de Mon Sep 20 16:43:41 2021 Received: from outpost1.zedat.fu-berlin.de ([130.133.4.66]) by list1.zedat.fu-berlin.de (Exim 4.94) for facets-of-complexity@lists.fu-berlin.de with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (envelope-from ) id 1mSKW9-001XT9-I5; Mon, 20 Sep 2021 16:43:37 +0200 Received: from inpost2.zedat.fu-berlin.de ([130.133.4.69]) by outpost.zedat.fu-berlin.de (Exim 4.94) for facets-of-complexity@lists.fu-berlin.de with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (envelope-from ) id 1mSKW9-000HbI-FX; Mon, 20 Sep 2021 16:43:37 +0200 Received: from ip5f5af230.dynamic.kabel-deutschland.de ([95.90.242.48] helo=[192.168.0.2]) by inpost2.zedat.fu-berlin.de (Exim 4.94) for facets-of-complexity@lists.fu-berlin.de with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (envelope-from ) id 1mSKW9-001pbv-8H; Mon, 20 Sep 2021 16:43:37 +0200 To: facets-of-complexity@lists.fu-berlin.de From: "I.Brunke" Message-ID: Date: Mon, 20 Sep 2021 16:42:26 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0 SeaMonkey/2.53.8.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Antivirus: Avast (VPS 210920-4, 20.9.2021), Outbound message X-Antivirus-Status: Clean X-Original-Sender: i.brunke@fu-berlin.de X-Originating-IP: 95.90.242.48 X-purgate: clean X-purgate-type: clean X-purgate-ID: 151147::1632149017-0002B8BF-AF0F92B9/0/0 X-Bogosity: Ham, tests=bogofilter, spamicity=0.009211, version=1.2.4 X-Spam-Flag: NO X-Spam-Status: No, score=-50.0 required=5.0 tests=ALL_TRUSTED X-Spam-Checker-Version: SpamAssassin 3.4.6 on Niue.ZEDAT.FU-Berlin.DE X-Spam-Level: Subject: [Facets-of-complexity] Invitation to: TES Thematic Mini-Conference Computational Topology and Machine Learning, September 28 + 29, 2021 X-BeenThere: facets-of-complexity@lists.fu-berlin.de X-Mailman-Version: 2.1.29 Precedence: list List-Id: announcements of Monday lectures and other events List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 Sep 2021 14:43:41 -0000 Dear colleagues, We wish to announce the    Thematic Mini-Conference  Computational Topology and Machine Learning, -------------------------------------------    September 28 + 29, 2021 of the    Thematic Einstein Semester    "Geometric and Topological Structure of Materials" https://www3.math.tu-berlin.de/mathplus/TES-Summer2021/    TU Berlin, April-September 2021    Tuesday, September 28, 2021    ---------------------------    Time Zone: Berlin Time (Central European Summer Time, CEST)     * 04:00 pm to 04:40 pm,  Jose Perea        (Northeastern U)     * 04:50 pm to 05:30 pm,  Bastian Rieck     (ETH Zürich)     * 06:00 pm to 06:40 pm,  Henry Adams       (Colorado State U)     * 06:50 pm to 07:30 pm,  Roland Kwitt      (U Salzburg)    Wednesday, September 29, 2021    -----------------------------    Time Zone: Berlin Time (Central European Summer Time, CEST)     * 04:00 pm to 04:40 pm,  Peter Bubenik     (U Florida)     * 04:50 pm to 05:30 pm,  Chao Chen         (Stony Brook)     * 06:00 pm to 06:40 pm,  Yusu Wang         (UC San Diego)     * 06:50 pm to 07:30 pm,  Mathieu Carrière  (Inria Sophia Antipolis)    For titles and abstracts please see https://www3.math.tu-berlin.de/mathplus/TES-Summer2021/ Participation: ------------- free Registration: ------------ Please register for the semester activities via this form: https://docs.google.com/forms/d/e/1FAIpQLSdW_OVSvdTWHsZHdzqrTTvd54pTaCCnu6Snw_ui7TOT4XbHkA/viewform Registered participants will receive the links for the semester by e-mail. Organizers: ----------     Myfanwy Evans (U Potsdam)     Kathryn Hess Bellwald (EPFL)     Frank Lutz (TU Berlin)     Dmitriy Morozov (LBNL)     Ileana Streinu (Smith College) --- -- Diese E-Mail wurde von Avast Antivirus-Software auf Viren geprüft. https://www.avast.com/antivirus