While the curator’s texts invoke brain-achingly complex notions of set theory—a particular interest of Rockburne’s—these elegant and witty plays on the construction of form and meaning lie within canonical realms of conceptual art that are now so widely understood they feel almost classical.
The two dozen plus works dating from 1967 to 2013 are ranged through the gallery’s four floors, with my favorite piece Egyptian Painting, Scribe (1979) facing us at the entrance to the first. It comprises a large, near wall-height diamond shape formed from four smaller diamond shapes created from pieces of meticulously folded white gessoed canvas. Their shadowing edges form an elegantly sculptural relief pattern enhanced by the stark lighting. If there’s nothing obviously Egyptian about the work, its uncompromising symmetry hints at a timeless sacred geometry.
On the second floor, the play with intersecting folding forms continues in layered shaped canvases, with the painted surfaces and chunkily three-dimensional canvases, pursuing contrasting narratives in brilliant colour. In Interior Perspective, Discordant Harmony (1985), a green-tinged lozenge-shaped canvas seems to slip behind a square canvas, its form continuing on the upper canvas in vertical green bands. These are intersected by liquidescent red strokes that surge from the bottom left corner to be cut short mid-canvas by a dead straight horizontal line. While Rockburne’s interest in the intersection of forms is understood to be underpinned by mathematical theory that could only, we assume, be explained at considerable length, the visual tricks on offer here are for the most part self-evident, and all the more satisfying for it.
Les Pensées De Pascal (1987–88) fits perfectly with its architectural position: its ground is the near perfect square of the gallery wall, painted a deep ultramarine, with a trapezoidal canvas standing on the floor where the fireplace would have been. Its gold-leafed upper edge creates a mantel-piece effect on which sits a turquoise triangle, its gilt edge seemingly drawn on the wall, with a multi-coloured rectangle seeming to float out of its all too material surface. The clouding textures and huge-scale brush marks are at once exquisitely hand-hewn and so meticulously applied I found myself going in close to make sure there wasn’t some photographic sleight of hand at play.
On this showing Rockburne is an intriguing one-off figure who veers between forms and styles that feel all too familiar—Conceptualism, post-painterly abstraction—with an idiosyncratic undertow of metaphysical questing. The intense color seen in the last two paintings described, which might feel decorative, even frivolous in the light of her loftier intellectual ambition, has a joyous rapture in its singing full-bodied hues. If making reference to the seventeenth-century French philosopher’s magnum opus could be seen as shade pretentious, the great thinker’s core belief that God is better approached through the heart than the mind feels highly relevant to these paintings. Decades of mathematical and astronomical research may have gone into them, but they aren’t at heart theoretical works. As visual experiences they can be enjoyed by anyone with an open mind and a discerning and curious eye.