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[VAn] Mieczysław Mastyło (Adam Mickiewicz University, Poznan, Poland)
[VAn] Mieczysław Mastyło (Adam Mickiewicz University, Poznan, Poland)
3 May 2024 - 10 May 2024 -
Venue: office 2, 3rd floor of the Mathematics Department Building
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[VAn] Mieczysław Mastyło (Adam Mickiewicz University, Poznan, Poland)
[VAn] Mieczysław Mastyło (Adam Mickiewicz University, Poznan, Poland)
3 May 2024 - 10 May 2024 -
Venue: office 2, 3rd floor of the Mathematics Department Building
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[VAn] Mieczysław Mastyło (Adam Mickiewicz University, Poznan, Poland)
[VAn] Mieczysław Mastyło (Adam Mickiewicz University, Poznan, Poland)
3 May 2024 - 10 May 2024 -
Venue: office 2, 3rd floor of the Mathematics Department Building
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[VAn] Mieczysław Mastyło (Adam Mickiewicz University, Poznan, Poland)
[VAn] Mieczysław Mastyło (Adam Mickiewicz University, Poznan, Poland)
3 May 2024 - 10 May 2024 -
Venue: office 2, 3rd floor of the Mathematics Department Building
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[SAL] i-Fitting-Formations on Clifford semigroups | Ana Catarina Monteiro (CEMAT, University of Lisbon)
[SAL] i-Fitting-Formations on Clifford semigroups | Ana Catarina Monteiro (CEMAT, University of Lisbon)
6 May 2024 - 2:00 pm - 3:00 pm
Seminar Room, Building VII
Abstract:
In this talk we will explore a recent joint work with Gracinda Gomes and study the concept of i-Fitting-Formation of Clifford semigroups.
A class of Clifford semigroups closed for idempotent separating quotients and for subdirect products of a finite family of the class with idempotent separating projections is said to be an i-formation of Clifford semigroups. A class of Clifford semigroups closed for normal subsemigroups and for Clifford semigroups generated by two normal subsemigroups of the class is said to be a Fitting class of Clifford semigroups.
Motivated by [3] and [1], in [2] bijections between classes of semigroups, congruences and languages were established using the concepts of i-formation and Fitting class, in particular on Clifford semigroups. A natural next step of this work is the study of i-Fitting-formations of Clifford semigroups, i.e., classes of Clifford semigroups that are simultaneously an i-formation and a Fitting class. Therefore, in this talk, we will look for the corresponding concepts in congruences and languages, by establishing bijections with i-Fitting-formations of Clifford semigroups.
References:
[1] A. Ballester-Bolinches, E. Cosme Llópez, R. Esteban-Romero, and J. Rutten. Formations of monoids, congruences, and formal languages. Scientific Annals of Computer Science, 25:171–209, 2015.
[2] G. M. S. Gomes and A.-C. C. Monteiro. Formations and i-Fitting classes of inverse semigroups, congruences and languages. to appear in Semigroup Forum.
[3] D. Therien. Classification of Regular Languages by Congruences. PhD thesis, 1980. AAI0533628.
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[VAn] Mieczysław Mastyło (Adam Mickiewicz University, Poznan, Poland)
[VAn] Mieczysław Mastyło (Adam Mickiewicz University, Poznan, Poland)
3 May 2024 - 10 May 2024 -
Venue: office 2, 3rd floor of the Mathematics Department Building
See more details
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[VAn] Mieczysław Mastyło (Adam Mickiewicz University, Poznan, Poland)
[VAn] Mieczysław Mastyło (Adam Mickiewicz University, Poznan, Poland)
3 May 2024 - 10 May 2024 -
Venue: office 2, 3rd floor of the Mathematics Department Building
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[SOR] Forest management: integrating mixed integer programming and fire spread | Isabel Martins (ISA - University of Lisbon, Portugal)
[SOR] Forest management: integrating mixed integer programming and fire spread | Isabel Martins (ISA - University of Lisbon, Portugal)
8 May 2024 - 2:00 pm - 3:00 pm
Room 3.3 - VII
Abstract:
A major activity in forest management is planning silviculture activities. Mixed integer programming (MIP) has been used to obtain optimal plans considering management objectives and constraints (e.g. carbon stock, biodiversity, and soil erosion). Our contribution is addressing fire not as an attribute/parameter of the MIP model, but by simulating its spread. Initially, the MIP model is solved. Subsequently, a worst-case fire spread simulation is conducted to identify fire paths with an excessively high rate of spread. Each identified unacceptable path results in an additional constraint in the MIP. This process is repeated until no unacceptable paths are identified, ensuring that no fire paths will have a rate of spread higher than a specified threshold.
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[SAn] Subgaussian Kahane-Salem-Zygmund inequalities in Banach spaces | Mieczysław Mastyło (Adam Mickiewicz University, Poznań, Poland)
[SAn] Subgaussian Kahane-Salem-Zygmund inequalities in Banach spaces | Mieczysław Mastyło (Adam Mickiewicz University, Poznań, Poland)
8 May 2024 - 2:15 pm - 3:15 pm
Room 1.6, building VII.
Title: Subgaussian Kahane-Salem-Zygmund inequalities in Banach spaces.
Speaker: Mieczysław Mastyło (Adam Mickiewicz University, Poznań, Poland).
Time: Wednesday, 8 May 2024, from 14:15 to 15:15.
Place: Room1.6, building VII.
Abstract: We will discuss approaches to the famous Kahane-Salem-Zygmund inequalities. In particular we will present estimates of the exponential Orlicz norms for $\sup_{1\leq j\leq N}\big|\sum_{i=1}^Ka_i(j) \gamma_i\big|$, where $(a_i(j))_{j=1}^N \in \ell_\infty^N, \,1 \leq i \leq K$ and $(\gamma_i)$ is a sequence of subgaussian random variables. Using tools from probability theory, Banach spaces and interpolation, we obtain new Kahane-Salem-Zygmund type random inequalities for the space of subgaussian polynomials on finite-dimensional Banach spaces, as well as for subgaussian Dirichlet polynomials. The talk is based on joint work with Andreas Defant.
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[VAn] Mieczysław Mastyło (Adam Mickiewicz University, Poznan, Poland)
[VAn] Mieczysław Mastyło (Adam Mickiewicz University, Poznan, Poland)
3 May 2024 - 10 May 2024 -
Venue: office 2, 3rd floor of the Mathematics Department Building
See more details
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[VAn] Mieczysław Mastyło (Adam Mickiewicz University, Poznan, Poland)
[VAn] Mieczysław Mastyło (Adam Mickiewicz University, Poznan, Poland)
3 May 2024 - 10 May 2024 -
Venue: office 2, 3rd floor of the Mathematics Department Building
See more details
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