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Jerusalem cross based on a cross potent (as commonly realised in early modern heraldry) The national flag of Georgia The Jerusalem cross (also known as "five-fold Cross", or "cross-and-crosslets") is a heraldic cross and Christian cross variant consisting of a large cross potent surrounded by four smaller Greek crosses, one in each quadrant, representing the Four Evangelists and the spread of ...
Thus 5-fold rotational symmetry cannot be eliminated by an argument missing either of those assumptions. A Penrose tiling of the whole (infinite) plane can only have exact 5-fold rotational symmetry (of the whole tiling) about a single point, however, whereas the 4-fold and 6-fold lattices have infinitely many centres of rotational symmetry.
The pattern represented by every finite patch of tiles in a Penrose tiling occurs infinitely many times throughout the tiling. They are quasicrystals: implemented as a physical structure a Penrose tiling will produce diffraction patterns with Bragg peaks and five-fold symmetry, revealing the repeated patterns and fixed orientations of its tiles ...
The more precise mathematical definition is that there is never translational symmetry in more than n – 1 linearly independent directions, where n is the dimension of the space filled, e.g., the three-dimensional tiling displayed in a quasicrystal may have translational symmetry in two directions.
This is followed by a digit, n, indicating the highest order of rotational symmetry: 1-fold (none), 2-fold, 3-fold, 4-fold, or 6-fold. The next two symbols indicate symmetries relative to one translation axis of the pattern, referred to as the "main" one; if there is a mirror perpendicular to a translation axis that is the main one (or if there ...
The Fivefold Scapular, also known as Redemptorist Scapular, is a sacramental made up of five best-known of the early scapulars in the Catholic Church: the Brown Scapular of the Carmelites, the Blue Scapular of the Immaculate Conception, the Black Scapular of the Servites, the Red Scapular of the Passion, and the White Scapular of the Most Holy Trinity.
Accordingly, each gross element has a five fold composition. It was also assumed that this process of division and recombination goes on till the gross elements are produced as a continuous unending process, with the processes of Srishti ("creation"), Stithi ("sustenance"), and Samhara ("dissolution") continuing without change or interruption.
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