Universal #1409

Legacy number: 1409

 Number  1405
 Original  The existence of a 2nd person dual pronoun seems to always imply that of a 1st person dual, whether with or without the inclusive-exclusive distinction, and/or a 3rd person dual.
 Standardized  IF there is a dual for 2nd person pronoun, THEN there is a dual for either 1st or a 3rd person or both. There will be never a dual limited to 2nd person.
 Formula  2Du pronoun ⇒ 1Du pronoun &, V 3Du pronoun
 Keywords  pronoun, number, dual, person, 1, 2, 3, inclusive, exclusive
 Domain  inflection
 Type  implication
 Status  achronic
 Quality  absolute
 Basis  languages surveyed in Greenberg 1988
 Source  Greenberg 1988: 1, Greenberg 1993: 12

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Discussion
Notes
1. Cf. Humboldt’s claim #568: If 2nd and 3rd Person differentiates a Dual, so does (with more than chance frequency) 1st (but not vice versa); see also Plank’s generalizations ##1136, 1137. 2. Cf. #1951.
Comment
Frans Plank · 3 Aug 2006
1. Cf. Humboldt's claim <a class="innerLink" href="browse.php?entry_id=568"><img src="../img/entry.gif" border="0">: If 2nd and 3rd Person differentiates a Dual, so does (with more than chance frequency) 1st (but not vice versa);
see also Plank's generalizations <a class="innerLink" href="browse.php?entry_id=1136"><img src="../img/entry.gif" border="0">, <a class="innerLink" href="browse.php?entry_id=1137"><img src="../img/entry.gif" border="0">.

2. Cf. <a class="innerLink" href="browse.php?entry_id=1951"><img src="../img/entry.gif" border="0">