26/07/2023
7月12日（水）、閉会式が催されました。式は今大会を振り返る映像からスタート。開会式の集合写真、競技に向かう選手たちや競技後の旅行の様子などが大画面で流れました。神谷千葉市長、藤田岳彦 中央大学教授の挨拶ののち表彰式が行われました。
まずIMO委員会会長のグレゴール・ドリナーさん（スロベニア リュブリャナ大学教授）が総評を述べ、最低1問の満点解答を得た選手へのオナラブルメンション受賞選手名が映し出されました。続いて銅、銀、金メダルの受賞者が10名ずつ、国旗やマスコット人形を手に壇上でメダルを受け取り、大きな拍手に包まれました。
五大陸から各1名、優れた成績を収めた女子選手に贈られるミルザハニ賞授与の後、満点獲得者5名の特別表彰で締めくくられました。ドリナーさんによると、今大会の問題選定会議で第6問が難しすぎるのでは？と長い議論があったそうです。その難問にも完答した5名に大きな賞賛が贈られました。
表彰式の後、日本選手団から来年の開催国の英国選手団へのIMO旗継承式が行われました。さらに英国文化や開催地・バース大学の雰囲気を紹介するユーモア溢れた映像が流れ、会場は笑いに包まれました。最後は藤田岳彦教授が挨拶し、1時間半の閉会式が終了しました。
On July 12, the closing ceremony was held. The ceremony began with a VTR reviewing the competition. Photos of the opening ceremony, the athletes heading for the contest, and post-competition excursions were projected on a large screen. After Chiba City Mayor Shunichi Kamiya and Professor Takehiko Fujita from Chuo University made their opening remarks, the awards ceremony took place.
First, IMO Committee Chairman Gregor Doliner (Professor at the University of Ljubljana, Slovenia) gave his comment. Then, the Honorable Mentions, the award given to the contestants who had received perfect score at least one question were announced. Each of the ten bronze, silver, and gold medal winners received their medals on the stage with their national flags and mascot dolls, to thunderous applause.
After the presentation of the Mirzakhani Award, given to one female athlete from each of the five continents for outstanding performance, the awards ceremony concluded with special recognition for the five perfect score winners. According to Professor Doliner, there was a long discussion that Question 6 might be too difficult. Thus, generous praise was given to the five contestans who gained the perfect scores on the difficult questions.
Lastly, the IMO flag was handed over from the Japanese team to the British team, the host country for next year's event. They presented a humorous VTR introducing British culture and the atmosphere of the host university, the University of Bath, made the audience filled with laughter.
Professor Takehiko Fujita gave the closing remarks and the one and a half hour closing ceremony came to an end.
