Key legal question
Whether the finding that the respondent had left the consortium before the mortgage obligation was created was arbitrary.
Extracted holding
No arbitrariness was shown; the cantonal court could rely on the resignation letter, later correspondence, and witness testimony.
Extracted reasoning
The criticism was largely appellatory. The court found the withdrawal accepted by the other members and, at latest, effective by end of April 1978, before the obligation of 2 December 1978.