DERIVATIONder.spa.la-diptongacion-sigue-al-acento
diphthongisation follows the stress
A stem vowel becomes a two-vowel sequence in exactly the cells where the word stress falls on the stem, and stays simple in the cells where it falls on the ending.
The four alternating classes are one rule seen four times, and the evidence is that they alternate in the same cells. Wherever the ending is unstressed the stem carries the stress and the vowel breaks; wherever the ending carries the stress the vowel stays simple. Nothing about the identity of the vowel decides the cells, only its position relative to the stress, which is why the four classes cannot be collapsed into fewer and cannot be split into more. Membership is nonetheless stored rather than computed, because a verb with the right vowel in the right position may still fail to alternate, and that is a fact about the entry rather than about the rule.
- status
status documentedasserted, and the sources agree- provenance
provenance authoredwritten for Logos, from first principles- derivation status
derivation_status unstatednobody has said whether it follows from anything- salience
salience - No salience. Where no frequency source applies the object carries none, rather than a default or a guess (03-schema.md §3.5).
- aliases
aliases - None recorded.
- sources
sources - SOURCENueva gramática de la lengua española (2009)
src.nueva-gramaticano page in v1 - SOURCEA New Reference Grammar of Modern Spanish (Butt and Benjamin)
src.butt-benjaminno page in v1
- SOURCENueva gramática de la lengua española (2009)
Premises
derivation.premisesWhat has to be true for this chain to run. Roughly half of a chain's premises are other derivations, so a premise is often itself a chain.
- OPERATIONacentuación gráfica
opr.spa.acentuacion-grafica - OPERATIONdiptongación tónica
opr.spa.diptongacion-tonica
diphthongisation follows the stress
A stem vowel becomes a two-vowel sequence in exactly the cells where the word stress falls on the stem, and stays simple in the cells where it falls on the ending.
- 1acentuación gráficaA word is written, and the syllable that carries its stress is compared with the syllable its final letter predicts.
- 2diptongación tónicaThe word stress falls on the stem vowel of a verb belonging to one of the diphthongising classes.
derives 4 of 4enumerated
None. Four alternating pairs are attested and all four are conditioned by the same stress placement.
Premises and conclusions declare no order (A16); listed alphabetically by id, a display choice and not a claim about which matters most. The steps above them are the one part of this component that IS a declared sequence, read from the applies-to composition chain.
Conclusions
derivation.conclusionsWhat the chain establishes. This is a set rather than a single fact: 45 percent of sampled derivations conclude about several things at once, and the several-ness is the claim.
Coverage, and what it does not reach
derivation.coverageThe arithmetic half is a required field and the build checks it. The residue rows are the structured half of the same statement.
derives 4 of 4enumerated
None. Four alternating pairs are attested and all four are conditioned by the same stress placement.
every case was counted, and the count closes: nothing is left over
Residue
No residue row. Where the coverage statement above says nothing is left over, that agreement is the record being consistent with itself; where it does not, the structured half is missing.Everything joined to this object
One group per typed edge, in both directions. A1b guarantees no object node is an orphan, so this is the whole navigation: an object with no edges would have failed the build rather than reached this page.
What this object is a kind of
Walking this object's own `is-a` edges: what it is a kind of. Several branches from one object are several classification axes, not competing supertypes.
- objects
- 1
- places drawn
- 1
- multi-parent
- None in this view. This subgraph happens to be a tree, which the explorer draws as one without assuming it is one.
A stem vowel becomes a two-vowel sequence in exactly the cells where the word stress falls on the stem, and stays simple in the cells where it falls on the ending.
Siblings are listed by name, then by id to break ties. That is a display choice made here and not an order the graph asserts.
Fan-out per dimension
A4One row per dimension, largest first. That is a display order, not a verdict: 03-schema.md declares no threshold above which fan-out is too much, so this reports the count and grades nothing.
- case13 values
- mood8 values
- voice8 values
- aspect7 values
- aktionsart6 values
- number6 values
- person6 values
- tense6 values
- comparison4 values
- evidentiality4 values
- gender4 values
- politeness4 values
- valency4 values
- animacy3 values
- definiteness3 values
- deixis3 values
- finiteness2 values
- information structure2 values
- interrogativity2 values
- polarity2 values
- switch-reference2 values
What kinds of this object there are
Walking the `is-a` edges that point at this object: what kinds of it there are. An object reachable two ways is drawn in both places and is still one object.
- objects
- 1
- places drawn
- 1
- multi-parent
- None in this view. This subgraph happens to be a tree, which the explorer draws as one without assuming it is one.
A stem vowel becomes a two-vowel sequence in exactly the cells where the word stress falls on the stem, and stays simple in the cells where it falls on the ending.
Siblings are listed by name, then by id to break ties. That is a display choice made here and not an order the graph asserts.