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1

Descending Chains and Antichains of the Unary, Linear, and Monotone Subfunction Relations

Journal:

Year:

2006

Language:

english

File:

PDF, 255 KB

english, 2006

2

On the Homomorphism Order of Labeled Posets

Léonard Kwuida, Erkko Lehtonen

Journal:

Year:

2011

Language:

english

File:

PDF, 383 KB

english, 2011

3

Commuting Polynomial Operations of Distributive Lattices

Mike Behrisch, Miguel Couceiro, Keith A. Kearnes, Erkko Lehtonen, Ágnes Szendrei

Journal:

Year:

2012

Language:

english

File:

PDF, 466 KB

english, 2012

4

Parametrized Arity Gap

Miguel Couceiro, Erkko Lehtonen, Tamás Waldhauser

Journal:

Year:

2013

Language:

english

File:

PDF, 342 KB

english, 2013

5

Generalized entropy in expanded semigroups and in algebras with neutral element

Lehtonen, Erkko, Pilitowska, Agata

Journal:

Semigroup Forum

Year:

2014

Language:

english

File:

PDF, 497 KB

english, 2014

6

RECONSTRUCTING MULTISETS OVER COMMUTATIVE GROUPOIDS AND AFFINE FUNCTIONS OVER NONASSOCIATIVE SEMIRINGS

LEHTONEN, ERKKO

Journal:

International Journal of Algebra and Computation

Year:

2014

Language:

english

File:

PDF, 288 KB

english, 2014

7

On Functions with a Unique Identification Minor

Lehtonen, Erkko

Journal:

Year:

2016

Language:

english

File:

PDF, 221 KB

english, 2016

8

Entropicity and generalized entropic property in idempotent\(n\)-semigroups

Lehtonen, Erkko, Pilitowska, Agata

Journal:

Semigroup Forum

Year:

2015

Language:

english

File:

PDF, 487 KB

english, 2015

9

Hypomorphic Sperner Systems and Non-Reconstructible Functions

Couceiro, Miguel, Lehtonen, Erkko, Schölzel, Karsten

Journal:

Year:

2015

Language:

english

File:

PDF, 2.37 MB

english, 2015

10

Composition of Post classes and normal forms of Boolean functions

Miguel Couceiro, Stephan Foldes, Erkko Lehtonen

Journal:

Discrete Mathematics

Year:

2006

Language:

english

File:

PDF, 356 KB

english, 2006

11

Equivalence of operations with respect to discriminator clones

Erkko Lehtonen, Ágnes Szendrei

Journal:

Discrete Mathematics

Year:

2009

Language:

english

File:

PDF, 905 KB

english, 2009

12

Generalizations of Świerczkowski’s lemma and the arity gap of finite functions

Miguel Couceiro, Erkko Lehtonen

Journal:

Discrete Mathematics

Year:

2009

Language:

english

File:

PDF, 507 KB

english, 2009

13

Labeled posets are universal

Journal:

European Journal of Combinatorics

Year:

2008

Language:

english

File:

PDF, 602 KB

english, 2008

14

Minors of Boolean functions with respect to clique functions and hypergraph homomorphisms

Erkko Lehtonen, Jaroslav Nešetřil

Journal:

European Journal of Combinatorics

Year:

2010

Language:

english

File:

PDF, 407 KB

english, 2010

15

Self-commuting lattice polynomial functions on chains

Miguel Couceiro, Erkko Lehtonen

Journal:

Aequationes Mathematicae

Year:

2011

Language:

english

File:

PDF, 218 KB

english, 2011

16

Closed classes of functions, generalized constraints, and clusters

Journal:

Algebra Universalis

Year:

2010

Language:

english

File:

PDF, 385 KB

english, 2010

17

Clones with finitely many relative({mathcal {R}})-classes

Erkko Lehtonen, Ágnes Szendrei

Journal:

Algebra Universalis

Year:

2011

Language:

english

File:

PDF, 590 KB

english, 2011

18

Galois theory for sets of operations closed under permutation, cylindrification, and composition

Miguel Couceiro, Erkko Lehtonen

Journal:

Algebra Universalis

Year:

2012

Language:

english

File:

PDF, 403 KB

english, 2012

19

The arity gap of order-preserving functions and extensions of pseudo-Boolean functions

Miguel Couceiro, Erkko Lehtonen, Tamás Waldhauser

Journal:

Discrete Applied Mathematics

Year:

2012

Language:

english

File:

PDF, 220 KB

english, 2012

20

Decompositions of functions based on arity gap

Miguel Couceiro, Erkko Lehtonen, Tamás Waldhauser

Journal:

Discrete Mathematics

Year:

2012

Language:

english

File:

PDF, 242 KB

english, 2012

21

[IEEE 2011 IEEE 41st International Symposium on Multiple-Valued Logic (ISMVL) - Tuusula, Finland (2011.05.23-2011.05.25)] 2011 41st IEEE International Symposium on Multiple-Valued Logic - On Equational Definability of Function Classes

Couceiro, Miguel, Lehtonen, Erkko, Waldhauser, Tam´s

Year:

2011

Language:

english

File:

PDF, 195 KB

english, 2011

22

[IEEE 2010 40th IEEE International Symposium on Multiple-Valued Logic - Barcelona, Spain (2010.05.26-2010.05.28)] 2010 40th IEEE International Symposium on Multiple-Valued Logic - Classes of Operations Closed under Permutation, Cylindrification and Composition

Couceiro, Miguel, Lehtonen, Erkko

Year:

2010

Language:

english

File:

PDF, 258 KB

english, 2010

23

[IEEE 2011 IEEE 41st International Symposium on Multiple-Valued Logic (ISMVL) - Tuusula, Finland (2011.05.23-2011.05.25)] 2011 41st IEEE International Symposium on Multiple-Valued Logic - A Survey on the Arity Gap

Couceiro, Miguel, Lehtonen, Erkko, Waldhauser, Tam´s

Year:

2011

Language:

english

File:

PDF, 186 KB

english, 2011

24

ON THE EFFECT OF VARIABLE IDENTIFICATION ON THE ESSENTIAL ARITY OF FUNCTIONS ON FINITE SETS

COUCEIRO, MIGUEL, LEHTONEN, ERKKO

Journal:

International Journal of Foundations of Computer Science

Year:

2007

Language:

english

File:

PDF, 586 KB

english, 2007

25

ADDITIVE DECOMPOSABILITY OF FUNCTIONS OVER ABELIAN GROUPS

COUCEIRO, MIGUEL, LEHTONEN, ERKKO, WALDHAUSER, TAMÁS

Journal:

International Journal of Algebra and Computation

Year:

2013

Language:

english

File:

PDF, 269 KB

english, 2013

26

Set-reconstructibility of Post classes

Couceiro, Miguel, Lehtonen, Erkko, Schölzel, Karsten

Journal:

Discrete Applied Mathematics

Year:

2015

Language:

english

File:

PDF, 439 KB

english, 2015

27

CHARACTERIZATION OF PRECLONES BY MATRIX COLLECTIONS

Lehtonen, Erkko

Journal:

Asian-European Journal of Mathematics

Year:

2010

Language:

english

File:

PDF, 238 KB

english, 2010

28

Associative string functions

Lehtonen, Erkko, Marichal, Jean-Luc, Teheux, Bruno

Journal:

Asian-European Journal of Mathematics

Year:

2014

Language:

english

File:

PDF, 268 KB

english, 2014

29

Majors of Functions

Couceiro, Miguel, Lehtonen, Erkko

Journal:

Year:

2017

Language:

english

File:

PDF, 287 KB

english, 2017

30

[IEEE 2017 IEEE 47th International Symposium on Multiple-Valued Logic (ISMVL) - Novi Sad, Serbia (2017.5.22-2017.5.24)] 2017 IEEE 47th International Symposium on Multiple-Valued Logic (ISMVL) - Posets of Minors of Functions in Multiple-Valued Logic

Lehtonen, Erkko, Waldhauser, Tamas

Year:

2017

Language:

english

File:

PDF, 253 KB

english, 2017

31

Minor Posets of Functions as Quotients of Partition Lattices

Lehtonen, Erkko, Waldhauser, Tamás

Journal:

Year:

2018

Language:

english

File:

PDF, 7.20 MB

english, 2018

32

Reflection-closed varieties of multisorted algebras and minor identities

Lehtonen, Erkko, Pöschel, Reinhard, Waldhauser, Tamás

Journal:

Algebra Universalis

Year:

2018

Language:

english

File:

PDF, 667 KB

english, 2018

33

Reflections on and of minor-closed classes of multisorted operations

Lehtonen, Erkko, Pöschel, Reinhard, Waldhauser, Tamás

Journal:

Algebra Universalis

Year:

2018

Language:

english

File:

PDF, 604 KB

english, 2018

34

On associative operations on commutative integral domains

Lehtonen, Erkko, Starke, Florian

Journal:

Semigroup Forum

Year:

2019

Language:

english

File:

PDF, 236 KB

english, 2019

35

Permutation groups arising from pattern involvement

Lehtonen, Erkko

Journal:

Journal of Algebraic Combinatorics

Year:

2019

Language:

english

File:

PDF, 652 KB

english, 2019

36

On the efficiency of normal form systems for representing Boolean functions

Couceiro, Miguel, Lehtonen, Erkko, Mercuriali, Pierre, PÃ©choux, Romain

Journal:

Theoretical Computer Science

Year:

2020

File:

PDF, 600 KB

2020