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A representation of a 6-dimensional Calabi-Yau space [Ref[21], p 207]. 

A representation of a 6-dimensional Calabi-Yau space [Ref[21], p 207]. 

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It is a brief review of the physical theories embodying the idea of extra dimensions, starting from the pre-historic times to the present day. Here we have classified the developments into three eras, such as Pre-Einstein, Einstein and Kaluza-Klein. Here the views and flow of thoughts are emphasized rather rigorous mathematical details. Majour deve...

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