Achim Friedland ahzf

## ntpv5-sketch.md

      
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                ahzf
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              Created
              March 2, 2025 23:53
                — forked from dfoxfranke/ntpv5-sketch.md
            
              
                NTPv5 Design Sketch
              
          
    Overview

ΤΗ ΚΑΛΛΙΣΤΗΙ!
This is a sketch of a proposed NTPv5 design (by no means a complete
spec, but hopefully good enough to make the concepts clear). It's a
fairly ambitious step forward from previous versions, almost but not
quite a green field design.  I say "almost" because it retains a
couple limited backward-compatibility constraints:

  
## DB Hackathons und DB OpenData Links.md

      
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                ahzf
                / DB Hackathons und DB OpenData Links.md
            
            
              Created
              May 10, 2016 21:56
                — forked from highsource/DB Hackathons und DB OpenData Links.md
            
          
    DB OpenData

DB OpenData Portal:

http://data.deutschebahn.com/

DB OpenData on GitHub:

https://github.com/dbopendata/


## endpoints.md

      
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                ahzf
                / endpoints.md
            
            
              Created
              May 6, 2016 21:54
                — forked from derhuerst/_.md
            
              
                List of HAFAS API Endpoints
              
          
    List of HAFAS API Endpoints

This is a list of HAFAS API endpoints, all with different data versions, API versions, output formats and URL configurations. Help me complete this list!
todo: http://www.fahrplanauskunftssysteme.de/?seitenID=27
Deutsche Bahn (Germany)


http://mobile.bahn.de/bin/extxml.exe or http://reiseauskunft.bahn.de/bin/extxml.exe
http://mobile.bahn.de/bin/mobil/query.exe or http://mobile.bahn.de/bin/query.exe or http://reiseauskunft.bahn.de/bin/query.exe


## springer-free-maths-books.md

      
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                ahzf
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              Created
              January 2, 2016 07:55
                — forked from bishboria/springer-free-maths-books.md
            
              
                Springer made a bunch of books available for free, these were the direct links
              
          
    These links no longer work. Springer have pulled the free plug.

Graduate texts in mathematics

duplicates = multiple editions
A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen
A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen