درخت حوزه‌های تخصصی

A regular hexagon is one of the shapes introduced in Plane Geometry and refers to a hexagon with equal sides wherein the size of each angle is 120 degrees. This geometric shape, which can be quickly drawn today, was constructed over a long period in the millennia BC In the Late Neolithic period in Mesopotamia, the primary geometric shapes, including triangles, quadrilaterals, arcs, and circles, were additionally painted on the surface of pottery ware. Naturally, these shapes had been initially drawn by hand, and the sides of the polygons were not comprised of straight lines, or the circles had not been drawn perfectly. However, in the Chalcolithic age, geometric shapes moved away from handmade forms and approached standard ones. This standardization was not possible without drawing tools. In the meantime, the role of compasses or other objects with a similar use was of utmost importance because drawing a circle with such tools paved the way for drawing regular polygons. In fact, from the Late Neolithic, handmade triangles and arcs in the Near East, the first regular hexagon in the late second or the early first millennium emerged over several thousand years. Constructing this geometric shape with the help of standard circles and arcs has been well documented in the Near Eastern archaeological evidence. On the other hand, regular hexagons have been attributed to the second half of the first millennium in the history of mathematics. Therefore, this study reflected on the construction process of this geometric shape and dated its drawing hundreds of years back.

In the sixteenth century, the strategic region of the Caucasus had a set of political, economic, transportation, and religious benefits for both the Safavid and Ottoman governments that led the two powers to compete for profound influence and attention in the region. During this period, when some weak and unstable kings such as Ismail II and Muhammad Khudābanda came to power, lack of strength and better performance caused the Ottoman government to grasp the most of the opportunity to extend their influence over the Caucasus. This study aims at investigating the geographical location of the Caucasus considering the Safavid diplomatic policies and the challenges between the Safavids and the Ottoman Empire through analyzing historical data and library studies. Descriptive data analysis has been considered as the method utilized for this research. The research findings indicate that the ineffectiveness of Safavid foreign policy at this time and the consequence of this policy would have an inevitably negative impact on maintaining and controlling the Caucasus. As a result, this policy would provoke the Ottoman invasions, leading to the occupation of some parts of the Caucasus.

“Evil animals” (MP. xrafstar, Av. xrafstra-) are harmful animals created by Ahriman to assist in destroying the world. Pahlavi scriptures present fragments of knowledge on various types of xrafstarân, some regulations and recommendations on how to crush them, and examples of divine reward for those believers who eradicate these evil animals. However, Pahlavi scriptures put urging stress on eliminating xrafstarân, sigillographic evidence from the Sassanid era points to the other direction, showing that in many cases, the Zoroastrian principle of destroying evil animals is ignored, to the extent that images of venomous animals could be seen on seals and sigils belonging to Zoroastrian priests and other elites of the Sassanid era. While in some cases, themes depicted on seals are by the religious recommendations of scriptures, owners’ personal preferences seem to remain the main factor in displaying images on seals. This question remains that depicting an evil animal on a personal seal contradicts religious regulations in Zoroastrianism. This opposition could be caused by diversity in interpretations of scriptures or by the co-existence of various factions of Zoroastrianism. The presence of other religions all over the Sassanid Empire could be one more cause of this discord. Through a comparison between depictions on seals and Pahlavi scriptures, the current study concludes that several images of xrafstarân depicted on seals are related to religions other than Zoroastrian Mithraism, Judaism, Christianism, and even Gnosticism. Moreover, most Zoroastrian scriptures mentioning xrafstarân are written only after the Sassanid era. It seems likely that after the collapse of Sassanid dynastys, some Zoroastrian priests rearranged the classification of beneficent animals created by Ahura and evil animals created by Ahriman. Nonetheless, the vital role of geography and cultural diversity of each region of the vast Sassanid Empire could not be overlooked while studying the presence or absence of animal themes in depictions.

The rock paintings of Iran are extremely significant and after five decades of research on them, nearly twenty different regions have been identified in different parts of the Iranian plateau. Each of these regions has its own unique local style. One of the most important areas is the “Eshkaft-e-Ahou” site, which has been identified for nearly two decades, but unfortunately, no research has been conducted on it. This research, using field and library methods, describes and compares the motifs of this site, and at the end, after investigating the climatic texture of the region, the authors have tried to reconstruct the life style of the creators of the paintings. This area is located in a very impassable region and in the highest area of the Gav-Bast Mountains. In order to reach the site, one must ascent a long distance with a steep slope of the mountain. Due to the characteristics of the motifs of this place and the potential for shelter, it is possible to determine that a small population of hunters have used this place. This rocky shelter is considered a very inappropriate place in contrast to today’s concepts of settlement definitions.