Nathan Krasnopoler

Nathan Krasnopoler (Dustin McKibben / August 19, 2011)

At funeral services for Nathan Krasnopoler at Sol Levinson and Bros. Funeral Home on Aug. 12, the 20-year-old was remembered by a Johns Hopkins University professor for his "keen and incisive intellect."

Mr. Krasnopoler died Aug. 10 at Gilchrist Center in Columbia of a severe, irreversible brain injury sustained Feb. 20 when he was hit by a motorist while riding his bicycle on West University Parkway near the Hopkins Homewood campus.

"Nathan was very bright, very creative and very self-motivated," said Edward R. Scheinerman, professor in the Johns Hopkins University's department of applied mathematics and statistics, who is also vice dean of education at the Whiting School of Engineering.

"As fascinating and far-ranging as Nathan's interests were, they don't begin to describe the depth of a young man … who skillfully articulated his cherished beliefs, and who had a circle of devoted and loving friends," Dr. Scheinerman said in his eulogy.

"Nathan had wide-ranging interests, including healthy eating, urban foraging, pen-and-paper games, and science fiction. Nathan was confident, self-assured and outspoken," he said.

Mr. Krasnopoler was born in Columbia and raised in Ellicott City.

"He excelled at math at an early age and began reading in the first grade," said his father, Mitchell Krasnopoler, a chemical engineer.

By the time he was 10 and a middle-school student, he had programmed his calculator so he could play chess.

"He was also an avid reader — I remember when we were hiking at Yosemite, he'd pull out a book when we stopped to rest," said his mother, Susan Cohen, an attorney. "He even took a book to his senior prom in case he got bored."

Mr. Krasnopoler was a 2009 graduate of the Shoshana S. Cardin School.

By the time he had arrived at the Northwest Baltimore high school, he had already progressed beyond its math curriculum, said Ian Blumenfeld, his math teacher there for three years.

"He was supremely talented, and I was basically hired specifically to teach Nathan and another student. He had a feel for the beauty of math, and because of his abilities was way off the charts," said Mr. Blumenfeld, who now works in research.

"Nathan really stood out and had the potential to do whatever he wanted in the technical research field," he said. "He was very contemplative and a nonconformist, but in a quiet way. He had values and stuck to them."

"While he was very attached to his computer, he enjoyed the outdoors. He was a very well-rounded person, and his teachers always respected his intellect and out-of-box thinking," his mother said.

"He was more interested in the bicycle for transportation and had taken up running. He was a barefoot runner, a kind of a back-to-nature type of runner," his father said.

"He was not a risk taker and really disliked driving. He really didn't want anything to do with it," his mother said. "He either walked or rode his bike. He told me once that he didn't want to live in the suburbs and wanted to live in a city."

A computer science and math student who was in his junior year at Hopkins, he quickly absorbed complicated concepts and was a whiz at finding "creative solutions to intriguing and difficult computer problems," Dr. Scheinerman said in his eulogy.

"Nathan enjoyed tinkering with computers and software," he said to the mourners. "Just for fun, he created his own functional programming extension to the C computer language. If you're not a computer scientist, let me explain that what Nathan did was highly sophisticated and demonstrated a mature understanding of computer languages."

In a telephone interview, Dr. Scheinerman said that Mr. Krasnopoler was "gently quiet in his class, but would speak up and ask insightful questions."