Spaces of quasi-maps into the flag varieties and their applications

A lawn chair rocker base system for converting a lawn chair having four legs that support a seat into a rocking chair. The lawn chair rocker base system includes a rocker base assembly and a chair locking structure. The rocker base assembly includes two rocker members that are spaced apart and secured together by two rigid spacer bars, each rocker member including a curved rocker rail and two chair foot receiving structures, each chair foot receiving structure including a planar chair foot receiving surface and a chair foot insertion opening formed through two rigid plates oriented at right angles to each other and at a right angle to the planar foot receiving surface. The chair locking structure includes four locking channel members supported in a spaced rectangular configuration by four structural spacer bars, each of the four locking channel members having an L-shaped cross-section, one of the four locking channel members being positioned at one of the four corners of the spaced rectangular configuration, the interior of each of the four locking channel members being oriented away from the center of the rectangular configuration, the chair locking structure being sized such that each of the four locking channel members is simultaneously positionable adjacent to one of the chair foot receiving structures.