The 15th Crossing Numbers Workshop will take place in Guanajuato, Mexico, from the 3rd to the 7th of November, 2025.
This research workshop is intended to bring together international researchers working on crossing numbers and related topics to make progress on open questions and explore new research direcctions.
The workshop will take place at Centro de Investigación en Matemáticas
For information on previous editions you can check the Events
section
on the
Crossing Numbers website.
Below you can find a tentative schedule.
| Time | Monday | Tuesday | Wednsday | Thursday | Friday |
|---|---|---|---|---|---|
| 8:00 - 9:00 | breakfast | breakfast | breakfast | breakfast | breakfast |
| 9:00 - 9:30 | opening remarks | group work | group work | group work | group work |
| 9:30 - 10:00 | Eva Czabarka - "A quantitative Kuratowski theorem" | ||||
| 10:00 - 10:30 | Laszlo Szekely - "Crossing numbers of infinite graphs" | ||||
| 10:30 - 11:00 | coffee | coffee | coffee | coffee | coffee |
| 11:00 - 13:00 | open problem session | group work | progress report | group work | progress reports |
| 13:00 - 14:00 | lunch | lunch | lunch | lunch | farewell lunch |
| 14:00 - 15:00 | group work | group work | free afternoon | group work | |
| 15:00 - 15:30 | coffee | coffee | coffee | ||
| 15:30 - 17:00 | group work | group work | group work |
Workshop participants will stay at CIMATEL, located in the Plaza de la Valenciana. It is a safe and pleasant place, a 10-minute walk from CIMAT.
The venue of the workshop is at Centro de Investigación en Matemáticas (CIMAT).
Guanajuato City is the Capital of the State of Guanajuato. It is one of the most important colonial towns in Latin America and a UNESCO declared World Heritage Zone.
This City is located about 350 km (220 miles) NW of Mexico City. Guanajuato's altitude, 2000 meters (6000 feet), ensures that the climate is always pleasant. The rainy season is from June to September.
By air: The nearest airport to Guanajuato is Bajio International Airport (BJX) that has direct flights to and from Mexico City, Monterrey, Tijuana, Atlanta, Chicago, Fresno, Dallas, Houston, and Los Angeles. From the airport you can get to Guanajuato by taxi (30 km). Just down the hall from the arrival area you will find a booth selling tickets for the taxis. Ask for a ticket to Guanajuato City. The taxi ride takes about 30-40 minutes. In the hall, there is an ATM and a Currency Exchange office.
By bus: Primera Plus and ETN are two first class bus companies operating routes to Guanajuato. For time schedules and ticket purchase, consult Primera Plus and ETN webpages. Buy your ticket in advance if possible. Once you arrive at the bus station in Guanajuato, take a taxi or an uber. There are no taxi stands to buy tickets.
| Name | Institution |
|---|---|
| Andrea Alba | Universidad de Guadalajara |
| Carlos Alfaro | Banco de México |
| Octavio Arizmendi | CIMAT |
| Drago Bokal | University of Maribor |
| Markus Chimani | University of Osnabrueck |
| Eva Czabarka | University of South Carolina |
| Diego Delgado Ávila | Universidad Autónoma de Zacatecas |
| Ruy Fabila | Cinvestav |
| Stefan Felsner | Technical University of Berlin |
| Silvia Fernández Merchant | California State University, Northridge |
| John Baptist Gauci | University of Malta |
| Sergio Gómez Galicia | Cinvestav |
| Víctor Gómez Martínez | Universidad Autónoma de San Luis Potosí |
| Benedikt Hahn | Technical University of Graz |
| César Hernández Vélez | Universidad Autónoma de San Luis Potosí |
| Jesús Leaños | Universidad Autoónoma de Zacatecas |
| Tomáš Masařík | University of Warsaw |
| Bojan Mohar | Simon Fraser University |
| Bruce Richter | University of Waterloo |
| Ignaz Rutter | University of Passau |
| Gelasio Salazar | Universidad Autónoma de San Luis Potosí |
| José Ángel Soto | Cinvestav |
| Laszlo Szekely | University of South Carolina |
| Birgit Vogtenhuber | Graz University of Technology |
| Mirko Wagner | University of Osnabrück |