Definitory and strategic rules in ethicsGustafsson, Juuso-Ville; Pietarinen, Ahti-Veikko15th Congress of Logic, Methodology and Philosophy of Science CLMPS 2015 : University of Helsinki, 3-8 August 2015 : book of abstracts2015 / p. 497-498 http://clmps.helsinki.fi/materials/CLMPS_LC_book%20of%20abstracts%2029.7.2015.pdf Mental imagery as a sign system?Issajeva, Jelena15th Congress of Logic, Methodology and Philosophy of Science CLMPS 2015 : University of Helsinki, 3-8 August 2015 : book of abstracts2015 / p. 484-485 http://clmps.helsinki.fi/materials/CLMPS_LC_book%20of%20abstracts%2029.7.2015.pdf Tracking the diagrammatic turn in recent philosophy of notationChampagne, Marc; Bellucci, Francesco; Burton, James; Stjernfelt, Frederik; Pietarinen, Ahti-Veikko15th Congress of Logic, Methodology and Philosophy of Science CLMPS 2015 : University of Helsinki, 3-8 August 2015 : book of abstracts2015 / p. 171-174 http://clmps.helsinki.fi/materials/CLMPS_LC_book%20of%20abstracts%2029.7.2015.pdf What makes symbolic logic "symbolic"?Moktefi, Amirouche15th Congress of Logic, Methodology and Philosophy of Science CLMPS 2015 : University of Helsinki, 3-8 August 2015 : book of abstracts2015 / p. 156-157 http://clmps.helsinki.fi/materials/CLMPS_LC_book%20of%20abstracts%2029.7.2015.pdf Which empiricism - standard or aim-oriented?Müürsepp, Peeter15th Congress of Logic, Methodology and Philosophy of Science CLMPS 2015 : University of Helsinki, 3-8 August 2015 : book of abstracts2015 / p. 575-576 http://clmps.helsinki.fi/materials/CLMPS_LC_book%20of%20abstracts%2029.7.2015.pdf