Kernrechtsfrage
Whether the lease termination for default was invalid because the warning and notice did not name the original landlords.
Extrahierter Entscheid
The termination remained valid; the tenant was barred from challenging the lower court's factual finding that the notices were attributable to the landlords and understood as such.
Extrahierte Begründung
The factual finding about the parties' actual understanding of the unilateral declarations is binding on appeal. The tenant's attack therefore could not be examined in the Federal Supreme Court.