Probably Art # 97: Circle

5 circles drawn in 2 shade(s) chosen from 4 unique size(s).

$$ s = .00031377, \; $$ $$ | \lbrace \theta \rbrace | = 2, $$ $$ | \lbrace r \rbrace | = 4,$$ $$ r_0 = 0.0500,$$ $$ R = 2.25, $$ $$r \sim \beta(3.000, 10.000), $$ $$\theta \sim \beta(4.000, 6.000). $$