• Written by best-selling Portugese author Regina Gonçalves.
　　• Best fiction titles for learning in Europe.
　　• Korean, Spanish, French, English and Simplied Chinese rights are sold.
　　• Selected as text books by Brazilian Ministry of Education, famous private schools and the Instituto Nacional de Matemtica Pura Aplicada.
　　• About one million copies are sold.　
　　• A historical fiction series dedicated to young readers and adults. It is packed with mystery and suspense stories that combine and integrate a wide range of fields of knowledge, such as History, Art, Philosophy and Science.
　　• English samples are available.

　　12 titles in this series: Mathematics–What beast is this?, Ramses II and the Battle of Kadesh, Napoleon Bonaparte in Russia, Alexander and Aristotle, The Phantom of the Opera Carmen, Einstein, Picasso, Agatha and Chaplin, Hannibal and Archimedes, Santos Dumont - Flying is for everyone, The Emperor and the Journalist, Tutankhamun,Marco Polo's Travels, The angel of the great depression

one more title in the second semester of 2023- "Enigma Machine in the Battle of the Atlantic"- is an adventure of Caius Zip during the second world war, with battle between a submarine and a destroyer warship, the search for the encoding/decoding machine called Enigma, the first electronic computer in Bletchey Park, dialogues with the math genius Alan Turing, Espionage and more...

　　Caius Zip appears in Paris of 1905 and witnesses a murder. Caius ends up in a boarding house where he meets Agatha Christie and Charlie Chaplin, both of which are 16 years old, and Albert Einstein and Pablo Picasso, 25 years old. Caius will need their help to solve the murder mystery.
　　Agatha, a charming and timid young girl, uses her rational mind to investigate the crime, and Chaplin, with his talent for pantomime, admires the cinema of Méliès from its very beginning. Einstein explains the theory of relativity in a way that is very easy to understand.
　　Amazingly, he perceives science as something that is closely connected to unlimited imagination. Einstein, Picasso and other interesting people discuss the fourth dimension and how the same principles affect science and art. Picasso has his first ideas on breaking free from the conventional perspective.
　　An interesting and fun way to understand these great minds and realize that art and science are made from the same matter: imagination and passion!

Regina Gonçalves
　　Regina has a degree in mathematics and systems analysis but decided not to pursue her profession in order to dedicate her time to teaching her daughters and other adolescents. She wrote textbooks with stories that combined the study of history with mathematics.
　　As these stories expanded, Regina found herself dedicating more and more of her time to writing and eventually completed a series of books about the young “Caius Zip – The Time Traveller,” for young readers and adults who are still young at heart.
　　Her works of fiction always aim at providing information and arousing the reader’s curiosity concerning matters of world history, art, philosophy and science. Mathematics has always been present in the solution of enigmas, and decision making in epic battles and during the investigation of a mystery.