The 59th meridian west is a longitudinal line that is located 59 degrees west of the Prime Meridian, which runs through Greenwich, England. It extends from the North Pole to the South Pole, passing through various regions, including parts of North America and South America. Specifically, in North America, the 59th meridian west crosses through parts of Canada and the northeastern United States. In South America, it crosses through parts of Brazil and Argentina.
The 34th meridian west runs north to south and is located 34 degrees west of the Prime Meridian. If you want to locate it in relation to Washington, D.C., you would find it by looking east on a map since Washington, D.C. is situated at approximately 77 degrees west longitude. Therefore, the 34th meridian west would be located to the east of Washington, D.C.
The 81st meridian east is a line of longitude that is 81 degrees east of the Prime Meridian, which is located at 0 degrees longitude. This meridian runs from the North Pole to the South Pole and passes through several countries in Asia, including parts of India, Nepal, and Bangladesh, as well as through the Indian Ocean. It is one of the longitudinal lines used in geographic coordinate systems for navigation and mapping.
The 43rd meridian west is a line of longitude that is 43 degrees west of the Prime Meridian, which is located at 0 degrees longitude. This meridian runs from the North Pole to the South Pole, passing through various countries and regions. In North America, the 43rd meridian west crosses parts of Canada, particularly in Quebec and Ontario, and also extends into the United States, where it serves as a boundary point for certain areas.
In the context of mathematics, particularly in geometric topology and metric geometry, a CAT(k) space is a type of metric space that satisfies certain curvature conditions, modeled on conditions defined by the CAT(0) and CAT(k) inequalities. The CAT conditions provide a way to generalize geometric notions of curvature to a broader class of spaces than just Riemannian manifolds.
The 75th meridian west is a line of longitude located 75 degrees west of the Prime Meridian, which is defined as 0 degrees longitude. This meridian runs from the North Pole to the South Pole and crosses various regions, primarily in North America. In the United States, the 75th meridian west passes through several states, including: - **New York**: It runs through eastern and central parts of the state, including areas near New York City and Albany.
The 53rd meridian west is a line of longitude that is 53 degrees west of the Prime Meridian, which is located in Greenwich, London. Lines of longitude run from the North Pole to the South Pole and are used to identify specific locations on the Earth's surface. The 53rd meridian west passes through several countries in South America, including parts of Brazil, Argentina, and Uruguay. It also crosses through the Atlantic Ocean.
The 55th meridian east is a line of longitude that is 55 degrees east of the Prime Meridian, which is located at the Royal Observatory in Greenwich, London. Meridians are used in geographic coordinate systems to specify locations on the Earth's surface. The 55th meridian east runs from the North Pole to the South Pole and passes through several countries in Eastern Europe, Central Asia, and the Indian Ocean.
The 64th meridian east is an imaginary line of longitude that is located 64 degrees east of the Prime Meridian, which is defined as 0 degrees longitude. It runs from the North Pole to the South Pole.
The 79th meridian east is a line of longitude located 79 degrees east of the Prime Meridian. This meridian runs from the North Pole to the South Pole and passes through several countries. Key areas that the 79th meridian east crosses include parts of northern India, specifically the states of Uttarakhand and Himachal Pradesh, as well as parts of Pakistan. In the southern hemisphere, it crosses through various regions in the Indian Ocean.
The 78th meridian west is a line of longitude that is 78 degrees west of the Prime Meridian, which is located in Greenwich, England. This meridian runs from the North Pole to the South Pole and passes through several states in the United States, as well as parts of Canada and countries in Central and South America. In the United States, the 78th meridian west passes through states like Virginia, West Virginia, and part of Maryland.
The 69th meridian west is a line of longitude located 69 degrees west of the Prime Meridian, which is defined as 0 degrees longitude. This meridian runs from the North Pole to the South Pole, passing through various regions in North America and South America. In North America, the 69th meridian west runs through parts of Canada, specifically the eastern part of the provinces of Quebec and Newfoundland and Labrador. It also crosses through several U.S.
The 71st meridian east is a line of longitude that is 71 degrees east of the Prime Meridian, which runs through Greenwich, England. This meridian traverses several countries as it spans from the North Pole to the South Pole. In the northern hemisphere, the 71st meridian east passes through parts of Russia, India, and the countries of Central Asia. In the southern hemisphere, it crosses through the southern parts of the Indian Ocean.
The 72nd meridian east is a line of longitude that is 72 degrees east of the Prime Meridian, which runs through Greenwich, England. This meridian runs from the North Pole to the South Pole and passes through several countries in Asia. Some of the notable countries it crosses include: - Russia - Mongolia - China - India - Bangladesh - Myanmar (Burma) - Thailand This meridian is used in various geographic, navigation, and timekeeping contexts.
The 74th meridian east is a line of longitude that is 74 degrees east of the Prime Meridian, which is the reference line for longitudinal measurements. The meridian runs from the North Pole to the South Pole and crosses through several countries.
Red Hook Wi-Fi is a community-driven initiative that provides free public Wi-Fi in the Red Hook neighborhood of Brooklyn, New York. The project was designed to bridge the digital divide and offer internet access to residents, businesses, and visitors in the area, especially in regions where traditional broadband services may be limited or unaffordable. The initiative often involves collaboration between local organizations, community members, and technology partners to create a reliable and accessible network.

Pinned article: Introduction to the OurBigBook Project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 2.
    You can publish local OurBigBook lightweight markup files to either https://OurBigBook.com or as a static website
    .
    Figure 3.
    Visual Studio Code extension installation
    .
    Figure 4.
    Visual Studio Code extension tree navigation
    .
    Figure 5.
    Web editor
    . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
    Video 4.
    OurBigBook Visual Studio Code extension editing and navigation demo
    . Source.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact