On Friday 21 November, Saturday 22 November, Sunday 23 November and Monday 24 November 2025, the “Fibonacci Days”, established in 2019, will return with a programme of free events organised by the Municipality of Pisa to celebrate the famous mathematician.
On Thursday 6 November at 11:30 a.m. in the Sala Azzurra of Palazzo della Carovana, there will be a preview of Fibonacci Days with “OPERAE”, a presentation of the sculpture installed in Piazza dei Cavalieri by artist Gianni Lucchesi.
The sculpture will be on display until 25 November 2025.
Speakers will include Luigi Ambrosio (full professor of Mathematical Analysis at the Scuola Normale Superiore), Paolo Pesciatini (Councillor for Tourism - Municipality of Pisa), Stefano Renzoni (art historian), Carlo Alberto Arzelà (architect), Federico Poloni (University of Pisa) and Gianni Lucchesi (artist).
PROGRAMME
Friday 21 November
3 p.m. - Sala Baleari of Palazzo Gambacorti (Piazza XX Settembre). Opening conference of the ‘Fibonacci Days’: ‘From numbers to beauty: Fibonacci's legacy in art’.
Institutional greetings: Paolo Pesciatini - Councillor for Tourism, Municipality of Pisa
Speakers: Claudio Francesconi - Curator of the Unframed exhibition
Presentation of the installation by Owen McAteer
Sara Tagliagamba - Art historian, ‘Leonardo, Pacioli and the golden ratio: harmony and proportion in the Renaissance vision’ an in-depth look at the relationship between art, mathematics and beauty, from De Divina Proportione to Leonardo's codices.
Marco Maiocchi “The Fibonacci series around us”, Gianni Lucchesi - Sculptor and author of “OPERAE”, Owen McAteer - Artist and author of “PHI”, Elisa Debernardi - President of the EstOvestEst Association.
5 p.m. - Logge dei Banchi. Inauguration of the artistic projection dedicated to Fibonacci
5.30 p.m. - Bagni di Nerone. Inauguration of the installation ‘PHI’ by artist Owen McAteer.
Video projection on Fibonacci's work from 21 to 24 November from 5:30 p.m. to midnight.
Saturday 22 November
3 p.m. - Domus Mazziniana (Via Massio d'Azeglio, 14). Conference ‘Fibonacci: the mathematician from Pisa’ organised by the Italian Sociological Centre of Pisa.
Institutional greetings: Paolo Pesciatini - Councillor for Tourism, Municipality of Pisa, Pietro Finelli, Tommaso Esposito.
Speakers:
Anna Checcoli Marjani Mazzantini - Fibonacci, numbers, the sacred laws of the universe,
Paolo Ercolani - From Leonardo Fibonacci to today's Artificial Intelligence,
Stefano Fava - Fibonacci and Medieval Literature: The Mathematics of Poetry
Giorgio Piccaia - The Golden Ratio and the Fibonacci Sequence in Art
Giovanni Ranieri Fascetti - Operative Freemasonry in the Time of Fibonacci
Sunday 23 November
4 p.m. - Archivio di Stato (Lungarno Mediceo 17). Presentation of Giorgio Ventura's book ‘Il teorema di Fibonacci - un giallo medievale’ (MdS Editore). With Jaleh Bahrabadi and Silvia Belli interviewing the author.
Monday 24 November
10.30 p.m. - Padiglione C1 (Cittadella Galileiana). Seminar for students ‘Fibonacci incontra le scuole’ (Fibonacci meets schools) with Silvia Benvenuti and Gian Marco Todesco and the staff of the Museum of Calculating Instruments.
5 p.m. - Sala Baleari di Palazzo Gambacorti (Piazza XX Settembre). TRound table discussion ‘Fibonacci: mathematics across the Mediterranean’ with the participation of: Djamil Aïssani - Université de Béjaïa, Raffaele Danna - Scuola Superiore S. Anna
Moderator: Fabio Gadducci - University of Pisa.
23 NOVEMBER: free admission to the city walls for residents and students.
The event is organised by the Municipality of Pisa in collaboration with the University of Pisa, Scuola Normale Superiore, Domus Mazziniana, State Archives of Pisa, Museum of Calculating Instruments and Rotary Club of Pisa.
