DSpace Community:
http://hdl.handle.net/10174/40
2023-06-02T22:35:08Z#SWI2023 DHM: The Heat Transition--Mathematical Models and Optimization
http://hdl.handle.net/10174/35086
Title: #SWI2023 DHM: The Heat Transition--Mathematical Models and Optimization
Authors: Ahsan, Muhammad; van der Bijl, Leander; Bodas, Shreehari; Buccoliero, Fabio; Chen, Yanfei; Correia, Joaquim M.C.; Hashemi, Leila; van der Hijden, Joris; Leonardi, Francesca; Lord, Gabriel; Martinez, Juan E. Machado; Tang, Zhirui; Winschermann, Leoni; Yu, Jialing
Abstract: DHM wants to derive a mathematical model for the current and potential future heating configurations of (a part of) a municipality which is able to describe the relevant decision variables (heat production, energy consumption, investment costs, … ); verify the model with data from the municipality of Rotterdam; formulate suitable optimization problems based on the derived models.
The models could serve as a tool to strategically allocate financial resources in heat transition processes and to make financial investment plans for the Rotterdam municipality, specifically in relation to the sustainable development goals for 2030 and further.2023-02-03T00:00:00ZPositioned numerical semigroups with maximal gender as function of multiplicity and Frobenius number
http://hdl.handle.net/10174/34702
Title: Positioned numerical semigroups with maximal gender as function of multiplicity and Frobenius number
Authors: J. Carlos, Rosales; Manuel, Branco; Manuel, Faria
Abstract: A C-semigroup (respectively a D-semigroup) is a positioned numerical semigroup S such that g(S)=F(S)+m(S)−12 (respectively g(S)=F(S)+m(S)−22). In this paper we study these semigroups giving formulas for the Frobenius number, pseudo-Frobenius number, and type. Furthermore, we give algorithms for computing the whole set of C-semigroups and D-semigroups.2022-01-01T00:00:00ZMinimal binomial systems of generators for the ideals of certain monomial curves
http://hdl.handle.net/10174/34678
Title: Minimal binomial systems of generators for the ideals of certain monomial curves
Authors: Branco, Manuel B.; Isabel, Colaço; Ignacio, Ojeda
Abstract: Let a, b and n > 1 be three positive integers such that a and ∑n−1 j=0 bj are relatively prime. In this paper, we prove that the toric ideal I associated to the
submonoid of N generated by {∑n−1 j=0 bj } ∪ {∑n−1
j=0 bj + a ∑i−2 j=0 bj | i = 2, . . . , n} is
determinantal. Moreover, we prove that for n > 3, the ideal I has a unique minimal system of generators if and only if a < b − 1.2021-12-01T00:00:00ZPositioned Numerical Semigroups with Small Gender
http://hdl.handle.net/10174/34675
Title: Positioned Numerical Semigroups with Small Gender
Authors: J. Carlos, Rosales; Manuel, Branco; Manuel, Faria
Editors: Springer
Abstract: An M-semigroup (respectively an N -semigroup) is a positioned numerical semigroup S, such that g(S) = F(S)+3/2 (respectively, g(S) = F(S)+4/2 ). In this paper, we describe and characterize this class of semigroups; in particular, we show that the type of an M-semigroup (respectively an N-semigroup) is equal to 2 or 3 (respectively 2, 3 or 4). Moreover, we give algorithms for computing the whole set of M-semigroups and N-semigroups.2022-03-01T00:00:00Z