Pith Number

pith:RQV4CON7

pith:2015:RQV4CON7M3EKBH5U7BCAXSJ3DR

not attested not anchored not stored refs pending

Uniqueness of Limit Models in Classes with Amalgamation

Andres Villaveces, Monica VanDieren, Rami Grossberg

arxiv:1507.02118 v2 · 2015-07-08 · math.LO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RQV4CON7M3EKBH5U7BCAXSJ3DR}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:24:32.911707Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c2bc139bf66c8a09fb4f8440bc93b1c52dde1523bcc3b6fd16824a2e52a4374

Aliases

arxiv: 1507.02118 · arxiv_version: 1507.02118v2 · doi: 10.48550/arxiv.1507.02118 · pith_short_12: RQV4CON7M3EK · pith_short_16: RQV4CON7M3EKBH5U · pith_short_8: RQV4CON7

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/RQV4CON7M3EKBH5U7BCAXSJ3DR \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 8c2bc139bf66c8a09fb4f8440bc93b1c52dde1523bcc3b6fd16824a2e52a4374

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e8fcf52e95e892e5f20048d42e809634c9a1056925ac7facb70d94d99cc8d37",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2015-07-08T12:13:42Z",
    "title_canon_sha256": "3a5b8cfd831615f057b73153a633b31789d47a487f2bdd6e20d668ab358391dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.02118",
    "kind": "arxiv",
    "version": 2
  }
}