How to recognize BH corners?

[LexCubing]

Okay so Pure comms are
Opposite: No
Anl: No

A9
??

Orthogonals
Opposite Yes
Anl:Yes

Cyclic Shifts
Same layer
Anl: Yes

Columns
2 corner are interchangeable by a half turn and the other corner is Anl to those two

Per Special
Easy. They're mutually interchangeable

Am I right? How to recognize A9s? Also why is AnI Adjacent Non-Interchangeable? Adjacent? Orthogonals are Opposite and AnI? Well they're not interchangeable but Adjacent?

 

[FastCubeMaster]

I know comms and I have absolutely no idea what that all means.
My advice for you is to learn them intuitively.

Edit: well I already knew what A9s were

 

[TDM]

I know comms and I have absolutely no idea what that all means.

Aside from Opposite/AnI (he explained what AnI is at the end of the post anyway), those are all fairly common terms for corner comms. They're a little outdated but still fairly well known. Also, the problem is that they're having trouble understanding it intuitively

 

[lucarubik]

i think there are 4 types of a9s, also there are several types of pure, the rest are unique on its structure

 

[LexCubing]

Aside from Opposite/AnI (he explained what AnI is at the end of the post anyway), those are all fairly common terms for corner comms. They're a little outdated but still fairly well known. Also, the problem is that they're having trouble understanding it intuitively

I understand comms also what are the new terms? I just want to know how to recognize A9s. How do you recognize them?

 

[Nam Dank the Tank]

I understand comms also what are the new terms? I just want to know how to recognize A9s. How do you recognize them?

if you are figuring out your own comms then a9 is just if you happen to find the perfect setup to cancel into

 

[LexCubing]

if you are figuring out your own comms then a9 is just if you happen to find the perfect setup to cancel into

Nvm I'll just use eliminatiom to recognize then I'll figure it out later.

 

[lucarubik]

A perms
R' (R' D' R, U2)
D (D R2 D', L2)
R' (R' D R, U2)
a perms can be done in 2 different 9 move ways, the rest only in one
i think thats all cases
i use elimination for pure cases, but htat was 7 years ago ^^