About Jacek
Jacek Ossowski is a Quantitative Research Analyst at QS Investors, a global multi-asset management firm located in New York. He is a mathematician by education (PhD from New York University) and an author of two popular science-themed books. Prior to his work on multi-asset allocation projects at QSI, Jacek worked for more than a decade at prominent Wall Street institutions like Goldman Sachs, Credit-Suisse Securities, and Royal Bank of Canada. The main focus of his work there were the mathematical and software aspects of statistical arbitrage, program trading and securities lending. He also worked at the New York Stock Exchange at their offices in Paris and New York while consulting for OneMarketData, a leading provider of high-frequency data management tools. In between those endeavors Jacek taught mathematics, computer science, and quantitative finance at Northeastern University in Boston, Fordham University in New York, and Framingham State University in Framingham, MA.
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 The Blind Bidder's Eye , Jacek's second book written under the pseudonym Oscar Seurat, appeared in August 2015. It is a magical realism thriller involving a father and his teenage son, in which the pair’s lives spiral into chaos when the boy stumbles across a curious item belonging to an 18th century genius. The novel sends the reader on an exciting, bumpy path through the son’s humorous tribulations at his Manhattan high school, a singular Wall Street business of blind bidding, and the mind of Leonhard Euler (1707-1783), a mathematician historically known to have lost an eye due to mental exertion. Click on the image for a preview. ♦
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 In December of 2013, Jacek published a recreational mathematics book, Sudoku Stories: History, Art and Science in 101 Designer Puzzles. The novelty of the book, written under the pseudonym Oscar Seurat with a co-author Olivier Nicolas, rests upon the contained puzzles' pictorially representing objects rather than being just tables of randomly placed numbers. The 101 designs are accompanied by articles on the related and timely topics. The book comes in two formats: an 8.5'' x 11'' album, and a "pocket" volume 5'' x 8'' in size. Click on the image for a high quality preview. ♦
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ACHIEVEMENTS:
Galvin, Fred (1997): "On a Theorem of J. Ossowski", Journal of Combinatorial Theory, Series A 78, 151-153 The theorem is presented on page 31 as Theorem 2.11 in the following book: Jukna, Stasys, Extremal Combinatorics With Applications In Computer Science, Second Edition, Texts in
Theoretical Computer Science. An EATCS Series, Springer-Verlag 2011 ♦ Donald Knuth acknowledges (at the bottom of the page) my proof of a theorem anticipated by Joel Spencer (Erdős No. 1) in 1987:
Visual Blog
Puzzle Book
101
Magical Picture Puzzles and Stories
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Rather
than being just a table of randomly placed
numbers, each puzzle in this book depicts an animal, a symbol or an
object. A captivating
article on the object brings it to life and gives the puzzle its own
special personality. The puzzles are arranged into 14 topical chapters
which start with puzzles on "Animals", "Countries"
and "Environment" and end with those on "Money",
"Space" and "Warfare".
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| Pocket Edition |  |
Album Edition | ||||
| Size: | 5'' x 8'' | Size: | 8.5'' x 11'' | |||
| Cover: | Full Color | Cover: | Full Color | |||
| Interior: | B&W | Interior: | Full Color | |||
| Publisher: | Quadrature Books | Publisher: | Quadrature Books | |||
| ISBN-13: | 978-0991323524 | ISBN-13: | 978-0991323517 | |||
| ISBN-10: | 0991323521 | ISBN-10: | 0991323513 | |||
| LOOK INSIDE! | LOOK INSIDE! | |||||
| Where to Buy | Where to Buy | |||||
| @ Amazon.com |
B&W: @ Amazon.com |
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| @Barnes&Noble |
Full Color: Currently Unavailable |
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Euler Thriller
"'The Blind Bidder's Eye' is a captivating and thought-provoking thriller filled with risks and possibilities. It is an adventure worth diving into."
"An inventive puzzle of a novel by a writer of singular vision."
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The
Blind Bidder's Eye
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In
this magical realism thriller involving a father and his teenage son,
the couple's lives spiral into chaos when the boy stumbles across a
curious item belonging to an 18th century genius, Leonhard
Euler. Unexpectedly, the resulting flashes of brilliance
experienced by the boy bring few benefits in school and lead instead to
a series of mishaps including a disaster at his father's investment
firm. In spite of the misfortunes, the son's flares of ingenuity make the father - a Wall Street executive and a man impressed only by the strength of one’s mind - change his perception of the boy as a weakling and set the two's troubled relationship on a healing course. This change may be coming too late, however; the boy is missing and quite possibly in harm's way ... The novel sends the reader on an exciting, bumpy path through the son's humorous tribulations at his Manhattan high school, a singular Wall Street business of blind bidding, and the mind of Leonhard Euler (1707-1783), a mathematician historically known to have lost an eye due to mental exertion. Click on the image for a preview. † |
Torus Board Games
orus Boards is a collection of games based on flat depictions of
a torus with shiftable multi-colored bands on its surface. The bands are assumed to move in three directions: along the smaller radius, the larger radius, and spirally at an angle of 45 degrees to either of the radii. On the square these motions correspond to three shifts which wrap around the columns, rows, and diagonals. After the square (or torus) has been scrambled, your task is to bring it back to its original state by any combination of the three shifts.
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