Valentin Dimitrov Yordanov, born on January 26, 1960, is a renowned retired Bulgarian freestyle wrestler celebrated for his outstanding achievements in the up to 52 kg weight class. Throughout his illustrious career, Yordanov secured numerous accolades, including an Olympic gold medal, seven World Championships, and seven European Championships. Notably, he holds the distinction of being the sole wrestler to have garnered 10 medals, comprising seven gold, two silver, and one bronze, from the World Wrestling Championships. Hailing from the Bulgarian village of Sandrovo, he commenced his wrestling journey at the age of 10 under the guidance of coach Georgi Achev. Yordanov's emigration to the United States in 1990 saw him training at John du Pont's Foxcatcher Farm in Pennsylvania while continuing to represent Bulgaria in wrestling. Following his retirement after the 1996 Olympics, he assumed roles in sports administration, serving as the President of the Bulgarian Wrestling Federation and becoming a member of the board of the Bulgarian Olympic Committee. In 2013, Yordanov made headlines by returning his 1996 Olympic gold medal in protest of the International Olympic Committee's decision to eliminate wrestling from the Olympics. Married with two children, he continues to leave an indelible mark on the wrestling world through his administrative contributions and enduring legacy.

Valentin Stocker, born on April 12, 1989, is a former professional footballer from Switzerland, known for his exceptional skills as a left and attacking midfielder, as well as his contributions to the Switzerland national team.Stocker's career began with SC Kriens before he moved to Basel's youth department in January 2006. He quickly rose through the ranks, transitioning from the U-18 team to the Under-21 squad, where he showcased his talent and helped secure numerous titles for the club. His impressive performance led to his inclusion in Basel's first team during the 2007–08 season. Stocker's prowess on the field was evident as he scored crucial goals and played a pivotal role in Basel's victories, ultimately contributing to their championship wins.Stocker's success continued in subsequent seasons, as he became a regular member of the team and played a significant role in Basel's triumphs in various competitions. His notable achievements include scoring in the UEFA Champions League and winning multiple league championships with Basel.Despite facing a setback due to injury, Stocker made a remarkable comeback, extending his contract with Basel and continuing to make significant contributions to the team's success.Throughout his career, Stocker's dedication, skill, and unwavering commitment to excellence have solidified his reputation as a revered footballer, leaving a lasting impact on the sport.

Valentin Sébastien Roger Roberge, born on 9 June 1987, is a professional footballer known for his role as a centre-back at Cypriot club AEK Larnaca. Despite being born in France, Roberge represents Cyprus at the international level. Roberge's football journey began in his hometown of Montreuil, Seine-Saint-Denis, where he played for ESD Montreuil, Les Lilas, and Paris FC before making his senior debut with Guingamp. He later played for Paris Saint Germain and then signed with Aris Thessaloniki in 2008, eventually moving to Portugal's Marítimo. In 2013, he joined Premier League side Sunderland and later transferred to Apollon Limassol in 2016. Roberge's international career saw him become a Cypriot citizen in 2022 and he achieved his first cap for the national team at the age of 35. Throughout his career, Roberge has earned several accolades, including winning the Cypriot First Division in 2021–22 with Apollon Limassol.

Valentin Abel, born on 7 February 1991, is a renowned German Free Democratic Party politician who served as a Member of the Bundestag from Baden-Württemberg between 2021 and 2025. Hailing from Künzelsau, he is an alumnus of the University of Mannheim and previously held a professional role at Texas Instruments from 2016 to 2021. Abel's political journey saw him contesting Schwäbisch Hall – Hohenlohe in both 2017 and 2021, eventually securing a seat in the Bundestag via the state list. Within the parliament, he has been actively involved in the Committee on Transport and the Committee on Petitions, where he serves as his group’s rapporteur on cycling. Furthermore, Abel is associated with the German-Austrian Parliamentary Friendship Group and holds a position on the Rail Infrastructure Advisory Council at the Federal Network Agency for Electricity, Gas, Telecommunications, Posts, and Railway since 2022. Valentin Abel's dedication and contributions have solidified his influential presence in German politics.

Valentin Alexandre Poénaru, born in 1932 in Bucharest, is a prominent Romanian–French mathematician renowned for his contributions to low-dimensional topology. After completing his undergraduate studies at the University of Bucharest, Poénaru gained international recognition when he defected during the 1962 International Congress of Mathematicians in Stockholm, eventually settling in France. He later defended his Thèse d'État at the University of Paris and pursued further studies in the United States.Throughout his distinguished career, Poénaru focused on proving the Poincaré conjecture, a pursuit that spanned over several decades. His groundbreaking efforts culminated in a preprint posted to the arXiv in 2006, claiming to have finally completed the details of his approach and proven the conjecture. Poénaru's influential work extends to his authorship of notable publications and his mentorship of doctoral students, including Jean Lannes.Notably, his friend, the Peruvian painter Herman Braun-Vega, honored Poénaru's mathematical prowess by creating a family portrait that incorporates mathematical symbols reflecting his research works. Poénaru's enduring impact on the field of mathematics is evidenced by his lasting association with the Institut des Hautes Études Scientifiques in France and his extensive list of publications and references.For more information on Valentin Poénaru's impressive contributions and insights, the Mathematics Genealogy Project and various external links offer valuable resources and interviews that shed light on his remarkable