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We are all interconnected. Every living being on Earth is a part of a huge web and what affects one part will ultimately affect every other part. Bet your maths textbook never taught you that! Well, that’s exactly what the mathematics of complexity is all about.

It includes fractal geometry (you’ve already read about that) and the chaos theory (which you’ll read in the coming pages).

But mathematics of "complexity"? Isn’t maths complex enough in the first place? Not really, new mathematics is a fascinating journey of relationships and patterns and covers everything under the universe. But before we get on to exactly what this means, let us see the limitations of old mathematics.

The Greeks thought that every problem in the world could be solved using classical geometry. Galileo carried this further and used it to explain the solar system. By the time Newton explained his laws of motion, everyone was convinced that the world was like a mechanical clock and if you knew all of the initial conditions and how the it worked you could predict what would happen at any point in time. Science assumed that everything could be known and eventually predicted. The Universe was ruled by a detailed system of unchanging laws.

The "cosmic clock image" first began to shatter at the turn of the nineteenth century when physicists found that at the behaviour of the atom and individual electron could not be predicted. This gave birth to quantum physics decades later, but this, however, developed independent of the physics Newton came up with.

NEWTON, OLDHAT
Taking another example, you may have studied that Newton’s laws of gravitation work extremely well if we take two bodies into account. Take three bodies and it’s quite difficult, and beyond that the equations are so complicated that even a supercomputer cannot solve it. So science was already finding it difficult to explain complex systems. But no one had articulated a different view to replace the one that existed.

In fact, Mathematics prided itself in its detached, abstract isolation, completely apart from the real world — particularly nature — breathing instead the refined and pure air of its own self-contained universe of number. In the last century it even divorced itself from physics, its sister science for centuries.

CHAOS REIGNS
But now mathematics is making a comeback in a new avatar, totally shedding the image of the world as a cosmic clock with unchanging laws.

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redline.jpg (626 bytes) 4000 BC:
Earliest record of the use of fractions
redline.jpg (626 bytes) 3000 BC:
Birth of algebra
redline.jpg (626 bytes) 2000-500 BC:
Egyptians use geometry for construction projects
redline.jpg (626 bytes) 750 BC:
Greeks start laying down rules of geometry
redline.jpg (626 bytes) 400 BC:
Euclids’ The Elements forms the basis of modern geometry
redline.jpg (626 bytes) 825:
Al-Khwarizmi publishes famous treatise on algebra
redline.jpg (626 bytes) 1637:
Cartesian Geometry obtained by connecting algebra and geometry

NON LINEAR ERA

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redline.jpg (626 bytes) 1684:
Birth of Calculus
redline.jpg (626 bytes) 1831:
Complex numbers put on the cartesian plane
redline.jpg (626 bytes) 1890:
Henry Poincare lays the foundations of chaos theory
redline.jpg (626 bytes) 1927:
Heisenberg’s Uncertainty Principle lays the foundation of quantum mechanics
redline.jpg (626 bytes) 1975:
Birth of fractal geometry
redline.jpg (626 bytes) 1987:
James Gleick’s Chaos: Making a New Science popularizes the subject

Now this is not to say that laws don’t govern nature and the universe at all, but the laws are of a different kind than previously thought. The real world is fundamentally disordered, free. Chaos reigns over predictability. The world is an astonishingly complex pattern, which is actually a sum of simple ones. And all its elements are self-organising and inter-connected, where the whole is more than the sum of its components. (Something that would be abhorred by old mathematics)

In fact, the thrust is now from linear to non-linear. In the linear world, small changes result in small deviations and large changes result in large deviations (like you study in your mathematics equations). However in the real non-linear world, a small change in the initial conditions can have cataclysmic results and large changes may result in minor deviations. (Confused? Read "Law and Disorder on page 74). In fact, simple, linear systems are the exception in the Universe, not the rule.

New mathematics found that science had been fooling itself for centuries by ignoring tiny deviations in its data and experiments. If a number was slightly off what the causal laws predicted, the scientists simply assumed there was an error in measurement in order to uphold the sanctity of the law itself. And even computers can push a linear model so far.

The nineteenth century was the last century where classical science ruled. In the twentieth, it co-existed with the new school of thought. The twenty-first century on the other hand, may just be the century of the mathematics of complexity.

The real world is fundamentally disordered, free.

Complex Geniuses


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henry.jpg (1641 bytes) benot.jpg (2010 bytes)
Carl Fredreich Gauss:
Imaginary and complex numbers had no practical use in mathematics till Gauss put them on the Cartesian plane, enabling the science of fractals centuries later
Henry Poincare: Pioneered topology,
a form of visual or qualitative geometry that "gazed at the footprints of chaos"
Benoit Mandelbrot:
His 1975 book The Fractal Geometry of Nature gave forth to a new bold science on fractals

 

New mathematics has found that science has been fooling itself for centuries

 

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