During his time as an undergraduate, Hoborski not only studied hard, he also took an active part in student life. Stanisław Gołąb tells us that it was Hoborski who significantly contributed to the reactivation of the Jagiellonian University Mathematics Society. This Society had been established in 1893 and its goal was for students to work through tasks together, discuss mathematics they were working on, and organise meetings at which students presented papers they had prepared. A few years after its establishment, the activity of the Society practically ceased, and in 1900 Hoborski managed to encourage many students to become active members. At the end of November, on the 28th to be precise, the general meeting was held. Hoborski was elected chairman and held this position for two terms until 1902. During this time he gave many lectures. During Hoborski's leadership, the Society began to be interested in publishing textbooks. There was a problem with printing because there was a lack of funds, but lithographs could be prepared. The matter was important because there was a severe lack of materials in Polish ...

When Poland regained its independence in 1918, the Organising Committee of the Mining Academy in Krakow recommenced its work. On April 8, 1919, the Council of Ministers put forward an official motion to establish and open the Mining Academy in Krakow. On May 1, 1919, the first six professors of the Mining Academy were appointed. On October 20, 1919, Józef Piłsudski officiated at a celebratory inauguration of the Mining Academy in the main hall of the Jagiellonian University.

... our youth submitted to voluntary conscription, which I witnessed; then, on the 19th day of July 1920, they all went to their camps (only six were deemed unfit for military service).

In 1922, he received the title of professor at the Jagiellonian University, and in 1925 he was offered the Chair of Mathematics at the same university. He refused to accept this offer, however, not wanting to abandon the Mining Academy. In the role of professor, he continued his teaching activities at the Jagiellonian University, lecturing on various areas of differential geometry. Professor Hoborski had innate outstanding teaching abilities. He was an excellent lecturer, he prepared his lectures very carefully, delivering them with great eloquence and enthusiasm. He loved young people and, in particular, considered it his duty to take care of outstanding students. ... He willingly participated in his students' scientific trips to mines and steelworks, although it was extremely tiring for him due to his poor eyesight. He brilliantly organised the teaching syllabus and its delivery in his department. A few days before each exercise class, he held a briefing with the instructors, during which he discussed each task intended for the exercises which were to be completed at home.

In addition to Higher Mathematics, the scientific programme of the Mining Academy includes algebra, trigonometry and analytical geometry as subjects of separate lectures, and many deficiencies in pre-academic preparation are eliminated during them. ... Our lecture is inductive; we give examples that are selected in such a way that they create an intuitive concept in the reader, then we formulate a precise, specific concept, and we give examples again. We provide concepts and as few "rules", "formulas" and "patterns" as possible - because we are of the opinion that nowhere can mechanical science prevail so easily and wreak such mental devastation as in mathematics that is not properly taught.

He did not crave any honours, he was one of those who enjoyed his student's success more than his own. He was straightforward in his behaviour, approachable, and uncompromising in ethical matters. At the same time, he was very sensitive, both sensitive and understanding of human misfortune. Having no children of his own, he donated significant amounts of money to help orphans and poor students. He was a modest man, he did not desire honours, he valued above all the warm atmosphere of home and peace in which to work. In 1937, he founded the mathematical journal "Opuscula Mathematica" and was its first editor. Thanks to this title, the professor is still present in the university environment, as the journal continues to be published, and since 2000 there is a portrait of the founder on the cover.

The Nazi German invasion of Poland in September 1939 brought the university to a halt. On 6 September Krakow was seized by German troops. They began to loot and plunder the university property, and reorganise the Main Building of the Mining Academy to house the Regierung des Generalgouvernements (General Government administration). In 1940, the statue of Saint Barbara was thrown off the top of the main building and shattered to pieces.

On 6 September 1939, a general assembly of Jagiellonian University professors was called to inform them about the policy of German authorities on science and education. On this day at noon, in room 66 of the Jagiellonian University Collegium Novum, numerous professors and lecturers gathered. The building was surrounded by the Gestapo and the meeting participants were arrested. Among the detainees were also Mining Academy professors who had attended another meeting in the boardroom of the Jagiellonian University Faculty of Philosophy. 183 people were imprisoned, among them professors, associate professors, and assistants from both universities, as well as many other people outside the academic community.

The arrested were detained at the prison at Montelupich Street in Krakow and subsequently transferred to the barracks at Mazowiecka Street. Later, they were transported to a prison in Wrocław and finally to the concentration camp in Sachsenhausen.

For the professor, who was no longer young and not in the best physical condition, staying in the terrifying camp conditions was one series of suffering. He had been wearing glasses for many years, but they did not help him much. He could see things at a short distance. This visual defect caused him to be physically clumsy, he moved slowly and very carefully, and in addition, when admitted to the camp, he was given two left shoes. He endured the very hard camp regime, but he did not lose his dignity and still had enough fortitude and strength of spirit that he was able to initiate discussions on mathematical topics. When he was informed in the camp about the death of his wife [Apolonia], who died on 18 December 1939, he endured this blow bravely and said: "It's still better than if she found out about my death, which surely awaits me here." Without the supervision of his younger friends, he could not cope with dressing, walking and eating. He suffered a lot of humiliation from the SS men before receiving a yellow armband with three black points, which meant he was disabled and this protected him from harassment to some extent. The breakdown came later. Fellow prisoner Professor Kazimierz Stołyhwo recalled it this way: "He was so abused that he came to me several times, telling me that he would throw himself on the electrified barbed wire surrounding the camp." At the end of January 1940, in cramped, dirty clogs full of nails, he seriously injured his frostbitten feet. After the forced amputation of his big toes, gangrene and high fever developed. In the first days of February 1940, the professor, who could no longer move, was transferred to the camp hospital. When on 8 February 1940, during the assembly, the list of those released from the camp was announced, including Hoborski, he was no longer able to leave the district. Professor Antoni Hoborski died on 9 February 1940, the day after his colleagues left. He died a free man.