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  2. n2n - Wikipedia

    en.wikipedia.org/wiki/N2n

    n2n is an open source Layer 2 over Layer 3 VPN app utilising peer-to-peer architecture for network membership and routing. Unlike many other VPN programs, n2n can also connect computers which reside behind NAT routers. These connections are set up with help from a third computer that both computers can reach.

  3. Snowflake (software) - Wikipedia

    en.wikipedia.org/wiki/Snowflake_(software)

    A simple proxy, like a virtual private network (VPN), has only a single relay. This means that the server address of the VPN has to be known to every user, making it easier to block. [ 10 ] For instance, at the beginning of October 2022, during internet disruptions related to the Mahsa Amini protests , VPNs in Iran would drop connections every ...

  4. NordVPN - Wikipedia

    en.wikipedia.org/wiki/NordVPN

    NordVPN is a Lithuanian VPN service with applications for Microsoft Windows, macOS, Linux, Android, iOS, Android TV, and tvOS. [8] [9] [10] Manual setup is available for wireless routers, NAS devices, and other platforms.

  5. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    Thus the fraction3 / 4 ⁠ can be used to represent the ratio 3:4 (the ratio of the part to the whole), and the division 3 ÷ 4 (three divided by four). We can also write negative fractions, which represent the opposite of a positive fraction. For example, if ⁠ 1 / 2 ⁠ represents a half-dollar profit, then − ⁠ 1 / 2 ⁠ represents ...

  6. Virtual private network - Wikipedia

    en.wikipedia.org/wiki/Virtual_private_network

    Virtual private network (VPN) is a network architecture for virtually extending a private network (i.e. any computer network which is not the public Internet) across one or multiple other networks which are either untrusted (as they are not controlled by the entity aiming to implement the VPN) or need to be isolated (thus making the lower network invisible or not directly usable).

  7. Cauchy principal value - Wikipedia

    en.wikipedia.org/wiki/Cauchy_principal_value

    Depending on the type of singularity in the integrand f, the Cauchy principal value is defined according to the following rules: . For a singularity at a finite number b + [() + + ()] with < < and where b is the difficult point, at which the behavior of the function f is such that = for any < and = for any >.

  8. Irreducible fraction - Wikipedia

    en.wikipedia.org/wiki/Irreducible_fraction

    For example, ⁠ 1 / 4 ⁠, ⁠ 5 / 6 ⁠, and ⁠ −101 / 100 ⁠ are all irreducible fractions. On the other hand, ⁠ 2 / 4 ⁠ is reducible since it is equal in value to ⁠ 1 / 2 ⁠, and the numerator of ⁠ 1 / 2 ⁠ is less than the numerator of ⁠ 2 / 4 ⁠. A fraction that is reducible can be reduced by dividing both the numerator ...

  9. Volume fraction - Wikipedia

    en.wikipedia.org/wiki/Volume_fraction

    Volume percent is the concentration of a certain solute, measured by volume, in a solution.It has as a denominator the volume of the mixture itself, as usual for expressions of concentration, [2] rather than the total of all the individual components’ volumes prior to mixing: