top of page

Paper Presented
National and International Conferences

01

icnaa-24-2.jpg

Generalized N-soliton solutions to nonlinear evolution equations using a novel symbolic bilinear technique

Brij Mohan*, Raj Kumar, Sachin Kumar

International Conference on Nonlinear Analysis and Applications (ICNAA 2024)
Rishikesh, India 

May 10-12, 2024

This research proposes a new symbolic bilinear technique to construct N-soliton solutions for nonlinear partial differential equations. Depending on the arbitrary parameters, the proposed technique yields solutions for generalized solitons, illustrating Hirota's N-solitons as a case. Using this technique, we show the investigation of the well-known (1+1)-dimensional Korteweg-de Vries and (2+1)-dimensional Kadomtsev-Petviashvili equations. We show the comparative analysis of solutions for both studied equations up to the third order using this technique compared to those in Hirota's bilinear method. Further, we examine the dynamic behavior of the obtained generalized solitons with distinct parameter values. We build the Cole-Hopf transformations for the KdV and KP equations and obtain the bilinear form using Hirota's D-operators in the auxiliary function. We show the relationship between the dependent and arbitrary parameters, which justifies the relation for the phase shift coefficient as in Hirota's method. Selecting the values of arbitrary parameters as 1 in our obtained solutions provides Hirota's solitons solutions. We use Mathematica, a computer algebra system software, to examine how the obtained solutions with different parameter values behave dynamically. Solitons are stable and localized waves that appear in diverse fields of nonlinear sciences, such as oceanography, plasma physics, fluid mechanics, optical fibers, and other sciences.

02

bm-slc.jpeg

N-soliton bright-dark solutions of a (4+1)-dimensional variable coefficient generalized KP equation in fluid mechanics: Painlevé test and Hirota bilinear method

Brij Mohan*, Sachin Kumar, Raj Kumar

International Conference on Advances in Pure and Applied Mathematics (ICAPAM-24),
Delhi, India

February 08-10, 2024

This conference abstract presents a research study of a recently formed -dimensional variable coefficient generalized Kadomtsev-Petviashvili (vc-gKP) equation in fluid mechanics. It investigates the Painlevé integrability and bright-dark soliton solutions of this vc-gKP equation using the Painlevé test and Hirota bilinear technique, respectively. We get complete integrability with arbitrary choices, fulfilling the condition for compatibility for the resonances in Painlevé analysis. We obtain the dispersion with a phase variable and then form the Cole-Hopf or logarithmic transformation by calculating the constant in the transformation. Using this transformation, we generate the bilinear equation in the auxiliary function and, with the bilinear differential operator, construct Hirota's bilinear form of this equation. We employ Hirota's bilinear technique for N-soliton solutions to obtain up to three-soliton bright-dark solutions and their interactions with appropriate choices of parameters. Using the computer algebra system software Mathematica, we show the dynamical behavior of the generated solutions with several chosen parameter values. Solitons occur in diverse fields of nonlinear sciences, such as oceanography, fluid mechanics, water waves, optical fibers, plasma physics, and other sciences.

03

bm-paper_edited.jpg

Center-controlled N-rogue waves to a new generalized nonlinear P-type (3+1)-D evolution equation by a generalized solution of Hirota's N-soliton technique

Brij Mohan*, Sachin Kumar, Raj Kumar

6th International Conference FIAM-2023, DUBAI, UAE
December 21-22, 2023

This conference abstract presents a research study of a novel (3+1)-dimensional nonlinear partial differential equation. This research investigates the complete integrability of this equation through the standard Painlev\'e test. Using a direct generalized formula and symbolic computation techniques, we create rogue waves with adjustable dynamical characteristics controlled by the center parameters. Our investigation produces rogue wave solutions up to third-order through direct computation, considering a range of center-controlled parameter values and selecting appropriate constants within the equation. To facilitate our analysis, we derive a bilinear equation in the auxiliary function $f$, utilize the Cole-Hopf transformation for the dependent variable $u$, and introduce the transformed variable $\zeta$. Applying the direct approach of $N$-soliton solutions in Hirota's direct method to generate rogue waves up to the third order, we employ a generalized formula based on $N$-soliton solutions. Through the powerful symbolic computation tool \textit{Mathematica}, we provide visualizations of the dynamic behavior of rogue waves across diverse center-controlled parameters. Furthermore, our research highlights the prevalence of massive rogue waves within nonlinear phenomena, showcasing their dominance over their smaller counterparts. The investigated equation offers insights into the evolution of long waves characterized by small amplitudes, particularly relevant in plasma physics, wave motion in fluids, and weakly dispersive media. Rogue waves find applications in diverse scientific fields, including oceanography, fluid dynamics, dusty plasma, optical fibers, and nonlinear dynamics, in understanding complex nonlinear systems.

04

nec_edited.jpg

The Future of Higher Education in India and its Challenges

Brij Mohan*

National Education Conclave: India's Future and Higher Education,
Vigyan Bhawan, New Delhi, India

March 23-24, 2023

This article focuses on the future of higher education in India and discusses the challenges. It shows that significant trends such as online teaching and learning, skill-based education, and internationalization play critical roles in India's future of higher education. After that, it points out that improving the quality of education, increasing funding, promoting inclusive education, improving regulation, and investing in technology infrastructure can enhance and uplift higher education. The educational institutions, the government, and other stakeholders need to come together to work on the challenges, such as access to higher education, regulation, and technological infrastructure, and ensure that India's higher education system can meet future demands. It is necessary to ensure that every student in India has access to quality education and the opportunity to succeed.

bottom of page