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Imaginary Numbers: Theory, Mathematics, and Possibility

at Brooklyn Institute for Social Research

(28)
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Description
Class Level: All levels
Age Requirements: 21 and older
Average Class Size: 14
System Requirements:

You will need a reliable Internet connection as well as a computer or device with which you can access your virtual class. We recommend you arrive to class 5-10 minutes early to ensure you're able to set up your device and connection.

Class Delivery:

Classes will be held via Zoom.

Teacher: Suman Ganguli

Flexible Reschedule Policy: This provider has flexible, free rescheduling for any-in person workshop. Please see the cancellation policy for more details

What you'll learn in this history lesson:

The very idea of imaginary numbers appears at first glance preposterous, like something out of science fiction or the wildest philosophy. A real or ordinary number multiplied by an “imaginary unit” somehow mathematically produces a “complex” number that has both theoretical and practical applications. Rene Descartes, who coined the “imaginary” terminology, deemed them preposterous. And yet, imaginary numbers are indispensable—not only in geometry, number theory, and physics, but also for engineering and design in everything from aerospace to robotics to video games.

How did imaginary and complex numbers develop from their early roots in ancient classical algebra to their manifold applications today? And what are their implications not only for science and technology, but for our very philosophical conceptions of mathematics, and indeed mathematics’ relationship with physical reality?

In this course we will study the mathematics of imaginary numbers, their historical development, and questions they raise in the philosophy of mathematics. Students will trace their history and explore imaginary and complex numbers from an algebraic and geometric points of view. In particular, we will examine the elegant geometric interpretation of imaginary and complex numbers as forming a two-dimensional “complex plane,” which accelerated the acceptance of complex numbers as legitimate mathematical objects.

We will then investigate how applying calculus within this context gave rise to the field of complex analysis—which has proven to be remarkably useful in physics and engineering – and the field of complex dynamics which led to discovery of beautiful mathematical objects such as the Mandelbrot set—and the recognition of fractal geometry in natural phenomena like clouds, plants, geological formations, and more. 

Finally, we’ll discuss not only our overarching questions but what are the further potential theoretical and practical implications of imaginary and complex numbers.


Remote Learning

This course is available for "remote" learning and will be available to anyone with access to an internet device with a microphone (this includes most models of computers, tablets). Classes will take place with a "Live" instructor at the date/times listed below.

Upon registration, the instructor will send along additional information about how to log-on and participate in the class.

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Refund Policy

Upon request, we will refund the entire cost of a class up until 1 week before its start date. Students who withdraw after that point but before the first class are entitled to a 75% refund. After the first class: 50%. After the second: 25%. No refunds will be given after the third class.

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Reviews of Classes at Brooklyn Institute for Social Research (28)

School: Brooklyn Institute for Social Research

Brooklyn Institute for Social Research

The Brooklyn Institute for Social Research was established in 2011 in Boerum Hill, Brooklyn. Its mission is to extend liberal arts education and research far beyond the borders of the traditional university, supporting community education needs and opening up new possibilities for scholarship in the...

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