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Noncommutative algebras, rings and other noncommutative objects, along with their more classical commutative counterparts, have become a key part of modern mathematics, physics and many other fields. The q-deformed Heisenberg algebras defined by deformed Heisenberg canonical commutation relations of quantum mechanics play a distinguished role as important objects in pure mathematics and in many applications in physics. The structure of commuting elements in an algebra is of fundamental importance for its structure and representation theory as well as for its applications. The main objects studied in this monograph are q-deformed Heisenberg algebras — more specifically, commuting elements in q-deformed Heisenberg algebras.In this book the structure of commuting elements in q-deformed Heisenberg algebras is studied in a systematic way. Many new results are presented with complete proofs. Several appendices with some general theory used in other parts of the book include material on the Diamond lemma for ring theory, a theory of degree functions in arbitrary associative algebras, and some basic facts about q-combinatorial functions over an arbitrary field. The bibliography contains, in addition to references on q-deformed Heisenberg algebras, some selected references on related subjects and on existing and potential applications.The book is self-contained, as far as proofs and the background material are concerned. In addition to research and reference purposes, it can be used in a special course or a series of lectures on the subject or as complementary material to a general course on algebra. Specialists as well as doctoral and advanced undergraduate students in mathematics and physics will find this book useful in their research and study.

This Road bike is designed for people who like to ride or use it for daily commuting. The aluminium alloy frame is lightweight, stiff, responsive and easy to work with. It's also more durable and potential for higher speeds, it can withstand a harder impact without cracking or failing. It takes less energy to keep the bike at speed. 700c wheels have less rolling resistance, making them more efficient, you can ride further using the same amount of energy. These wheels also have better rollover capability, because have a larger circumference, they can more easily roll over potholes, bumps, branches, roots and other obstacles on the road or trail. Color: Whites. Gender: unisex. Age Group: adult.

This Road bike is designed for people who like to ride or use it for daily commuting. The aluminium alloy frame is lightweight, stiff, responsive, and easy to work with. It's also more durable and potential for higher speeds, it can withstand a harder impact without cracking or failing. The brake system consists of double caliper brakes which are lighter and more aerodynamic than disc brakes. It can ensure that riders stop immediately in case of emergency. This road bike features 16 speed L-TWOO Shifters, gives diverse riding experience and also ensures total control in every situation, like in gravel, city road or other tough terrain. You can glide over most obstacles without losing speed or getting shaken around too much. It takes less energy to keep the bike at speed. 700c wheels have less rolling resistance, making them more efficient, you can ride further using the same amount of energy. These wheels also have better rollover capability, because have a larger circumference, they can more easily roll over potholes, bumps, branches, roots, and other obstacles on the road or trail. Color: Beige/Cream. Gender: unisex. Age Group: adult.

This Road bike is designed for people who like to ride or use it for daily commuting. The aluminium alloy frame is lightweight, stiff, responsive, and easy to work with. It's also more durable and potential for higher speeds, it can withstand a harder impact without cracking or failing. The brake system consists of double caliper brakes which are lighter and more aerodynamic than disc brakes. It can ensure that riders stop immediately in case of emergency. This road bike features 16 speed L-TWOO Shifters, gives diverse riding experience and also ensures total control in every situation, like in gravel, city road or other tough terrain. You can glide over most obstacles without losing speed or getting shaken around too much. It takes less energy to keep the bike at speed. 700c wheels have less rolling resistance, making them more efficient, you can ride further using the same amount of energy. These wheels also have better rollover capability, because have a larger circumference, they can more easily roll over potholes, bumps, branches, roots, and other obstacles on the road or trail. Color: Multi. Gender: unisex. Age Group: adult.

Noncommutative algebras, rings and other noncommutative objects, along with their more classical commutative counterparts, have become a key part of modern mathematics, physics and many other fields. The q-deformed Heisenberg algebras defined by deformed Heisenberg canonical commutation relations of quantum mechanics play a distinguished role as important objects in pure mathematics and in many applications in physics. The structure of commuting elements in an algebra is of fundamental importance for its structure and representation theory as well as for its applications. The main objects studied in this monograph are q-deformed Heisenberg algebras — more specifically, commuting elements in q-deformed Heisenberg algebras.In this book the structure of commuting elements in q-deformed Heisenberg algebras is studied in a systematic way. Many new results are presented with complete proofs. Several appendices with some general theory used in other parts of the book include material on the Diamond lemma for ring theory, a theory of degree functions in arbitrary associative algebras, and some basic facts about q-combinatorial functions over an arbitrary field. The bibliography contains, in addition to references on q-deformed Heisenberg algebras, some selected references on related subjects and on existing and potential applications.The book is self-contained, as far as proofs and the background material are concerned. In addition to research and reference purposes, it can be used in a special course or a series of lectures on the subject or as complementary material to a general course on algebra. Specialists as well as doctoral and advanced undergraduate students in mathematics and physics will find this book useful in their research and study.

An exploration of the ways that everyday life in the city is defined by commuting.We spend much of our lives in transit to and from work. Although we might dismiss our daily commute as a wearying slog, we rarely stop to think about the significance of these daily journeys. In Transit Life, David Bissell explores how everyday life in cities is increasingly defined by commuting. Examining the overlooked events and encounters of the commute, Bissell shows that the material experiences of our daily journeys are transforming life in our cities. The commute is a time where some of the most pressing tensions of contemporary life play out, striking at the heart of such issues as our work-life balance; our relationships with others; our sense of place; and our understanding of who we are.Drawing on in-depth fieldwork with commuters, journalists, transit advocates, policymakers, and others in Sydney, Australia, Transit Life takes a holistic perspective to change how we think about commuting. Rather than arguing that transport infrastructure investment alone can solve our commuting problems, Bissell explores the more subtle but powerful forms of social change that commuting creates. He examines the complex politics of urban mobility through multiple dimensions, including the competencies that commuters develop over time; commuting dispositions and the social life of the commute; the multiple temporalities of commuting; the experience of commuting spaces, from footpath to on-ramp, both physical and digital; the voices of commuting, from private rants to drive-time radio; and the interplay of materialities, ideas, advocates, and organizations in commuting infrastructures.

Well-written and comprehensive history of the Northwestern Pacific Railroad's suburban electrics in Marin County, California. This line was a pioneer in many aspects, introducing power system and block signal designs that made it a test ground for later subway and rapid transit installations. The full flavor of electric commuter operations (and the San Francisco Bay ferries that served Sausalito and Tiburon) is captured in a clear, detailed narrative complemented by evocative black and white photos. Includes section on the Electra, a steeple-cab, standard gauge locomotive built in the NP shops and used for freight haulage from 1903-1906. With rosters listing wooden motor cars, wooden trailer cars, steel suburban coaches, and ferries of the NP and its predecessors. Includes bibliography. Decorative end papers show timetables (front) and Special Rules (back). This is Interurbans Special 84. 126 pages with index.

Unread book in perfect condition.

New. US edition. Expediting shipping for all USA and Europe orders excluding PO Box. Excellent Customer Service.

Demonstrates how to select or modify a bike for commuting, master basic riding skills, plan trips, prevent theft, and ride safely at night or in inclement weather

Well-written and comprehensive history of the Northwestern Pacific Railroad's suburban electrics in Marin County, California. This line was a pioneer in many aspects, introducing power system and block signal designs that made it a test ground for later subway and rapid transit installations. The full flavor of electric commuter operations (and the San Francisco Bay ferries that served Sausalito and Tiburon) is captured in a clear, detailed narrative complemented by evocative black and white photos. Includes section on the Electra, a steeple-cab, standard gauge locomotive built in the NP shops and used for freight haulage from 1903-1906. With rosters listing wooden motor cars, wooden trailer cars, steel suburban coaches, and ferries of the NP and its predecessors. Includes bibliography. Decorative end papers show timetables (front) and Special Rules (back). This is Interurbans Special 84. 126 pages with index.

Unread book in perfect condition.

This Is the Second Volume in a Detailed History of the East Bay-san Francisco Trains, Ferries and Busses. Illustrated with More Than 200 Historic Photographs.

Book by Gabrielse, Ed, Holinka, Mike

In shrink wrap. Looks like an interesting title!

288 pages. 8.58x5.50x0.75 inches. In Stock.

The adult electric bike is equipped with a 42V 10.4Ah high-capacity lithium battery, which can travel 20 miles per charge in pure electric mode (volunteer weighs 160 pounds), which is enough for your one-day use, and the removable battery has the characteristics of long life, high durability, anti-theft and convenience. The high-quality 500 W motor can reach a maximum speed of 15.5 MPH and can easily conquer a 16% slope. The electric bike is designed to be foldable. When folded, it measures 30 in. x 14 in. x 25 in. and weighs only 51.4 lbs.

The adult electric bike is equipped with a 42V 10.4Ah high-capacity lithium battery, which can travel 20 miles per charge in pure electric mode (volunteer weighs 160 pounds), which is enough for your one-day use, and the removable battery has the characteristics of long life, high durability, anti-theft and convenience. The high-quality 500 W motor can reach a maximum speed of 15.5 MPH and can easily conquer a 16% slope. The electric bike is designed to be foldable. When folded, it measures 30 in. x 14 in. x 25 in. and weighs only 51.4 lbs.

Commuting, hanging out or working out, the Move jacket does it all. With our trusted Helly Tech® Protection 2-layer construction, it’s fully waterproof, breathable and windproof. We reinforced the weatherproofing with a PFC-free DWR treatment. You can customize the fit with a hood draw cord as well as an adjustable cuffs and bottom hem.

Take your daily essentials on the go with the robust Overwatch Double Tap Messenger Bag. Crafted from durable 500D nylon, this bag is designed to withstand the rigors of frequent travel, daily commuting, and bustling coffee shop meet-ups. The spacious main compartment is thoughtfully designed with three mesh zippered pockets, hook-and-loop slip pockets, and a dedicated water bottle holder to keep your belongings organized and easily accessible.This versatile Overwatch Messenger Bag is equipped with a padded zippered pocket on the exterior and an internal padded sleeve, both capable of securely holding a laptop or tablet up to 15 inches. The bag's comprehensive padding is meticulously designed to safeguard your valuable electronics and other important gear.For those who value discretion, a hidden quick-access compartment with a loop platform is included for concealed carry. The bag's front pockets and admin panel offer additional storage for essentials like optics, plane tickets, multi-tools, and other travel accessories. The external MOLLE system further enhances the bag's functionality by providing an attachment point for additional accessories.Comfort is not compromised in this rugged messenger bag. The padded shoulder strap, soft mesh panel on the rear, and external water bottle pocket are all designed to ensure a comfortable carry throughout the day. For those on the move, a luggage handle pass-through feature allows for easy stacking on top of your suitcase, making airport navigation a breeze.Embrace the grind and tackle your day head-on with the Overwatch Double Tap Messenger Bag. This imported bag is not just a practical choice, but a stylish one too, perfect for the modern, on-the-go individual.