Fourteen Kendras, angles were plotted
By ace astronomers,
Small, small Manda anomalies,
Angles between position & aphelion !

The fourteen major perturbations,
Of the Moon were identified !
Evection, variation and annual equation,
And the great parallactic equation !

And fourteen trig corrections given,
To find the true longitude of Luna !
Two more trig corrections,
After the standard fourteen !

Vikshepa Vritteeya Gatho Vipata,
Thasmannyel Jyam Parinathyabhikhyam
Yugmau pada swarnam idam vidheyam,
Syath Kranti Vritteya Ehaisha Chandra !

Trikona in Sanskrit, Trignon in Greek,
For Triangle, Mithi meaning measure,
Trikona Mithi became Trignometry,
And Jya Mithi became Geometry !

The Essence of Siddhantas Eighteen,
Is the Sanskrit Ganita Nirnaya.
Puliyoor studied all eighteen
Plus Aryabhaateeya, Maha Bhaskareeya.

Siddhantas Arya, Brahma Sphuta
And came out with a gem
Based on Parameswara’s Model Geometric !
Simple and most accurate !

The Longitude Corrected Thrice,
Manda, Parinathi & Sheeghra Anomalies,
Manda means Reduction to Heliocentric
Parinathi means Reduction to Ecliptic

And Sheeghra means Reduction to Geocentric
To get longitudes true ! 
The Magnificent Model,
Of Kerala Astronomy !

First treatise on Mathematics,
Was translated by Arabs, As Sind Hind !
Arybhatteyam as Al Arjabhat,
Thus Arabs gained insight into Maths !

Indian Astronomy is Pre-Ptolemaic,
Says Dennis Duke,
Physics Professor, Florida University
Original are the multi step algorithms !

       Surya Siddhanta                                                      

     Pitamaha Siddhanta                                                   

     Vyasa Siddhanta                                                      

     Vasishta Siddhanta                                                   

     Atri Siddanta                                                        

     Parasara Siddhanta                                                   

     Kashyapa Siddhanta                                                    

     Narada Siddhanta                                                     

     Garga Siddhanta                                                      

     Marichi Siddhanta                                                     

     Manu Siddhanta                                                       

     Angira Siddhanta                                                     

     Lomasa Siddhanta                                                     

     Paulasa Siddhanta                                                    

     Yavana Siddhanta                                                     

     Chyavana Siddhanta                                                   

     Bhrigu Siddhanta                                                      

                                                                          

     And Others                                                           

                                                                           

     Maha Bhaskareeya by Bhaskara I                                       

     Arya Siddhanta by Aryabhata I                                        

     Maha Siddhanta by Aryabhata II                                       

     Siddhanta Siromani by Bhaskara II                                    

     Aryabhateeya by Aryabhata                                            

     Aryabhateeya Bhasya by Neelakanta Somayaji                           

     Sphuta Nirnaya by Achyuta Pisharodi                                  

     Siddhanta Darpana by Neelakanta                                      

     Ganitha Adhyaya by Bhaskara                                          

     Ganitha Nirnaya by Puliyoor                                           

     Brahma Sphuta Siddhanta by Brahmagupta                               

     Siddhanta Shekhara by Sripathi                                       

     Siddhanta Tatva Viveka by Kamaleswara                                

     Siddanta Deepika by Parameswara                                      

     Tantrasangraha by Neelakanta                                         

     Venvaroha by Madhava                                                 

     Yukthi Bhasha by Jyeshta Deva                                         

     Jyothir Meemamsa by Neelakanta                                       

     Gola Deepika by Parameswara                                          

     Drig Ganitha - By Parameswara                                         

     Grahana Nyaya Deepika by Parameswara                                  

                                                                   

     Kerala School of Hindu Astronomy by Prof K V Sarma                   

     Geometry in Ancient and Medieval India by T A Saraswathy             

     Indian Journal of History Sciences by A K Baig                       

     The Science of Ancient Hindu Geometry by B Dutta                     

     Parameswara's Rule by R C Dutta                                      

     Indian Journal of History Sciences by R C Dutta                      

     Madhava of Sangramagrama by Journal of Kerala Studies                

     On the Quadrature of the Circle by C T Rajagopal                      

     Medieval Kerala Mathematics - Archive of History of Science by C T Raj

     Laghu Bhaskareeya by Sankara Narayanan                               

     Geometry of Sree Yantra by N C Bolton                                

     Mayoora Shikha ( The Crest of the Peacock ) by Dr Joseph