# Jacek Staszelis
**Wikidata**: [Q48866884](https://www.wikidata.org/wiki/Q48866884)  
**Source**: https://4ort.xyz/entity/jacek-staszelis

## Summary
Jacek Staszelis was a Polish computer scientist and mathematician born in Warsaw in 1949 and passed away in 2025. He is known for his work in computer science and mathematics, contributing to the field throughout his professional career in Poland.

## Biography
- **Born:** 20 January 1949, Warsaw
- **Nationality:** Poland
- **Occupation:** Computer Scientist, Mathematician
- **Languages Spoken:** Polish
- **Citizenship:** Poland
- **Death Date:** 26 November 2025

## Contributions
The provided source material does not specify concrete contributions such as published papers, patents, founded companies, open-source projects, or standards created by Jacek Staszelis. While his occupations are listed as computer scientist and mathematician, the details of his specific research, key publications, or notable outcomes are not included in the given data. His work occurred within the industrial and service sectors of computer science in Poland, but the nature and impact of his specific contributions are not detailed in these sources.

## FAQs
### Q: What were Jacek Staszelis's primary professions?
A: Jacek Staszelis was a computer scientist and a mathematician.

### Q: Where was Jacek Staszelis born and when did he live?
A: He was born in Warsaw on 20 January 1949 and passed away on 26 November 2025.

### Q: What was Jacek Staszelis's nationality?
A: He was Polish, holding Polish citizenship.

### Q: In what fields did Jacek Staszelis work?
A: He worked primarily in the fields of computer science and mathematics.

## Why They Matter
As a Polish computer scientist and mathematician, Jacek Staszelis contributed to the development of his respective fields within Poland. His work spanned both the industrial and service sectors, indicating practical application of computer science principles. While the specific nature and lasting impact of his individual contributions are not detailed in the provided sources, his presence in these fields, particularly as a mathematician within computer science, signifies participation in the broader academic and technological landscape of Poland during his lifetime. Without his work, the specific advancements he may have made are unknown, but his career represents the contribution of Polish expertise to computer science and mathematics.

## Notable For
- Dual professional identity as both a computer scientist and a mathematician.
- Significant presence within the Polish computer science sector, working in both industrial and service environments.
- Birth in Warsaw, Poland, in 1949.
- Passing away on 26 November 2025.
- Representation in the Wikimedia Commons and Polish Wikipedia.

## Body
### Personal Details
- Jacek Staszelis was male.
- He was born on 20 January 1949 in Warsaw.
- He held Polish citizenship.
- He passed away on 26 November 2025.
- He spoke and wrote in Polish.

### Professional Identity
- His occupations were listed as computer scientist and mathematician.
- As a computer scientist, his industry context included the industrial sector and the service sector.
- He was associated with the field of mathematics within the context of computer science, as indicated by the reference linking "mathematician" to the context of Wikidata property Q7018311 (mathematics in computer science).

### Online Presence & Recognition
- He had a presence on Wikimedia Commons, with an image available at the specified link.
- He was recognized in the Polish Wikipedia and Wikimedia Commons (commons category: Jacek Staszelis).
- His Google Knowledge Graph ID is `/g/11f40j1yw7`.
- He had 2 sitelinks recorded (presumably referring to Wikipedia editions).
- He had a sitelink count of 2 in Wikidata.