change the notation for tnth from \_ to avoid a conflict with mca · affeldt-aist/infotheo@c092788

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

Hiding binding of key N to nat_scope

Hiding binding of key N to nat_scope

Hiding binding of key R to ring_scope

Notation Rminus_gt_0_lt is deprecated since 8.19.

Notation Rlt_Rminus is deprecated since 8.19.

Notation Rminus_gt_0_lt is deprecated since 8.19.

Notation Rlt_Rminus is deprecated since 8.19.

dominatesN is declared opaque (Qed) but this is not fully respected

Declaring a scope implicitly is deprecated; use in advance an

to_porder does not respect the uniform inheritance condition.

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