## Why does the symbol for zero look like a capital ‘o’ (0)?

The history of this fundamental number is surprisingly intricate. Its roots can be traced back to ancient Babylon around 300 BCE, where a positional numeral system employed two slanted wedges to signify an empty place in a number. However, this was merely a placeholder without any numerical value.

A more concrete step towards our modern zero emerged in Greece. The letter omicron (ο), short for οὐδὲν (ouden = nothing), was utilized as a placeholder in astronomical calculations by figures such as Ptolemy and Iamblichus as early as the 1st century CE. This practice likely influenced Indian mathematicians following Alexander the Great’s conquests.

Indian mathematicians revolutionized this concept by transforming the placeholder into a full-fledged number. Initially represented by a dot called ‘bindu‘ (बिन्दु), zero became a cornerstone of arithmetic and algebra. This innovation was crucial in the development of our modern number system.

## Magic Pi Approximation?

Is this a coincidence? Not really. Surprise, surprise. Read more

## Largest prime through the sum of primes raised to their respective prime powers

Believe it or not, S is a prime number !

More intriguing number facts.

## Numbers Defying Ceiling and Floor Functions

Two sequences that agree for an embarrassingly long time.

## Topological Oddity: A Picture-Hanging Puzzle

Imagine the linear pattern as a hanging rope. Now, removing any one of these four nails will cause the entire rope to fall.

## Logarithmic and Fibonacci Spirals in Plant Phyllotaxis

Nature, particularly in plants, features logarithmic and Fibonacci spirals, exemplifying the elegance of natural design and the rhythmic dance of life, encompassing symmetry and other intriguing mathematical phenomena, including recursive functions.

Spiral patterns in plants emerge from their repetitive growth, where each turn closely mirrors the previous one with scaling or rotational adjustments. This growth process, common in nature and known as phyllotaxis, utilizes recursive functions, which can generate logarithmic and Fibonacci spiral patterns.

## The Fascinating World of Runic Calendars

The Runic calendar, also referred to as a Rune almanac, served as a perpetual timekeeping tool throughout Northern Europe until the 19th century. Structured with lines of symbols, it marked significant astronomical events and celebrations, including solstices, equinoxes, and Christian holidays. These symbols were often etched onto parchment or carved into various materials such as wood, bone, or horn.

One of the most esteemed examples of these calendars is Worm’s Norwegian runic calendar from 1643, renowned for its bone craftsmanship. Danish Antiquarian Ole Worm featured it in his book “Fasti Danici, universam tempora computandi rationem antiquitus in Dania et vicinis regionibus observatam libris tribus exhibentes.” Although he extensively detailed the winter months in his work, he omitted details regarding the summer season. Fortunately, supplementary insights are provided through ‘runstavs’ and ‘primstavs.’ ‘Runstavs’ served as runic sticks used in divination practices, while ‘primstavs’ were Norwegian wooden calendar sticks primarily employed for timekeeping and weather prediction.