Lars-Erik Persson could refer to various individuals, but one notable figure is Lars-Erik Persson, a Swedish businessman known for his role in the fashion industry, particularly as the founder of the clothing brand Gudrun Sjödén. He is recognized for his contributions to sustainable fashion and design.

Lars Edvard Phragmén was a Swedish mathematician and engineer noted for his work in complex analysis and mathematical physics. He is particularly known for developing the Phragmén–Lindelöf principle, which is a theorem in complex analysis that provides conditions under which a holomorphic function can be extended to the boundary of a domain. This principle has important implications in various areas of mathematics, including potential theory and boundary value problems.

As of my last knowledge update in October 2021, there is no widely recognized figure or concept specifically known as "Louise Petrén-Overton." It's possible that she could be a private individual, or that she has gained prominence for some reason after my last update.

Michael Benedicks is a mathematician known for his work in the field of dynamical systems, particularly in the area of hyperbolic dynamics and ergodic theory. He has made significant contributions to various mathematical problems, including the study of diffeomorphisms and chaotic behavior in dynamical systems.

Albert Victor Bäcklund (1846–1922) was a notable Swedish mathematician, renowned for his work in the fields of differential equations and mathematical physics. He made significant contributions to the theory of partial differential equations and is particularly known for his research on the Bäcklund transformations, which are methods to construct new solutions from known solutions of certain differential equations. Bäcklund's work has had a lasting impact on mathematical physics and the development of various mathematical concepts.

Tanja Bergkvist is a Swedish figure known primarily for her advocacy related to issues around women’s health, gender equality, and her perspectives on social and political matters. She has gained attention for her outspoken views and her engagement with various societal topics, often utilizing social media platforms to communicate her message. Depending on the context, she may also be associated with specific campaigns or initiatives that align with her advocacy work.

Swedish plasma physicists refer to researchers and scientists in Sweden who specialize in the study of plasma physics, which is the branch of physics that deals with plasmas—ionized gases composed of charged particles, including ions and electrons. Plasma is often referred to as the fourth state of matter, alongside solid, liquid, and gas.

Bodil Jönsson is a Swedish physicist, author, and speaker, well-known for her work in the fields of time, aging, and the philosophy of time. She has gained recognition for her ability to communicate complex scientific concepts to a general audience and has written several influential books, including "Time is a Created Thing" (original title: "Tid är något vi gör") which explores the nature of time and its impact on our lives.

Gustaf Dalén (1869–1937) was a Swedish engineer and inventor, best known for his work in the field of lighthouse technology and automatic signaling. He made significant contributions to the development of optical devices, particularly the AGA lamp, which improved the efficiency of lighthouses and helped transform maritime navigation. Dalén's inventions included the sun valve, a device that automatically adjusted the intensity of a lighthouse's light based on sunlight.

Torbjörn Sjöstrand is a Swedish individual known primarily for his work in mathematics and related fields. However, there may be limited publicly available information about him, as he is not a widely recognized figure in popular culture or general public discourse.

The divisor function, often denoted as \( d(n) \) or \( \sigma_k(n) \), is a function in number theory that counts or sums the divisors of a positive integer \( n \). 1. **Count of Divisors**: The most common version is \( d(n) \), which counts the total number of positive divisors of \( n \).

Per-Olov Löwdin was a prominent Swedish theoretical physicist and chemist, known for his contributions to quantum chemistry and molecular physics. Born on February 15, 1916, and passing on March 3, 2000, Löwdin is celebrated for his work in the development of mathematical methods to describe atomic and molecular interactions.

Thor Hans Hansson is a prominent figure in the field of computer science, particularly known for his contributions to various areas such as theoretical computer science, programming languages, and formal methods. He may have published research papers, contributed to academic conferences, or been involved in teaching at a university level.

Conservation laws are fundamental principles in physics that state certain physical quantities remain constant within a closed system over time. These laws are derived from symmetries in nature and provide crucial insights into the behavior of physical systems. The most well-known conservation laws include: 1. **Conservation of Energy**: The total energy in a closed system remains constant over time. Energy can neither be created nor destroyed but can change forms (e.g., from kinetic to potential energy).

Gustave Dumas may refer to a few different contexts depending on the field of interest. However, it is most commonly associated with a French writer born in 1842 and passed away in 1891. He is known for his contributions to literature, particularly during the 19th century. If you have a specific context or field in mind (literature, art, history, etc.

Hannes Keller is a notable figure known primarily for his achievements in the field of free diving. He is recognized for setting multiple world records and holds significant notoriety in the diving community for his contributions to the sport. Keller is particularly known for his record accomplishments in static apnea, where divers hold their breath for as long as possible while floating on the surface of the water. In addition to his diving feats, Keller has also been involved in promoting free diving as a sport and advocating for its safe practice.

Hermann Kinkelin is a name that may not be widely recognized in popular culture or mainstream history. However, if you are referring to a specific context—such as literature, science, or a particular field—please provide additional details so I can assist you better.

Johann Makowsky does not appear to be a widely recognized individual or term in common sources as of my last training cut-off in October 2023. It's possible that it could refer to a person, a fictional character, or a reference from a specific niche that is not broadly known.

Jürg Peter Buser is a Swiss physicist known for his research in the field of physics, particularly in areas related to optics and photonics. However, there may be limited publicly available information about him.

Viviane Baladi is a well-known French mathematician recognized for her contributions to the fields of dynamical systems, mathematical physics, and applied mathematics. She has worked on various topics, including statistical mechanics and the theory of dynamical systems. In addition to her research, Baladi has been involved in academic roles, including teaching and mentoring students in mathematics.