signed and dated lower right first piece in a series of four

signed and dated lower right second piece in a series of four

signed and dated lower right fourth piece in a series of four

signed and dated lower right fourth piece in a series of four

signed and dated lower right

signed, titled, and dated below the image on the front algorithm completed in 1975 drawing completed in 1979

signed, titled, and dated below the image on the front algorithm completed in 1975 drawing completed in 1979

signed, titled, and dated below the image on the front algorithm completed in 1975 drawing completed in 1979

signed and dated lower right

computer algorithm created in 1980 / printed in 1985 signed and titled on the front titled and dated on the back of the frame this is the third piece from a series of three

computer algorithm created in 1980 / printed in 1985 signed and titled on the front titled and dated on the back of the frame this is the second piece from a series of three

computer algorithm created in 1980 / printed in 1985 signed and titled on the front titled and dated on the back of the frame this is the first piece from a series of three