Pith Number

pith:VDZ7TC2W

pith:2017:VDZ7TC2WQNEYW33RG2WIAIUZ3X

not attested not anchored not stored refs pending

Conservative Extensions in Guarded and Two-Variable Fragments

Carsten Lutz, Frank Wolter, Jean Christoph Jung, Mauricio Martel, Thomas Schneider

arxiv:1705.10115 v1 · 2017-05-29 · cs.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{VDZ7TC2WQNEYW33RG2WIAIUZ3X}

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	2026-05-18T00:43:31.935782Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8f3f98b5683498b6f7136ac802299ddf0db780f5548dca219017bace6760b72

Aliases

arxiv: 1705.10115 · arxiv_version: 1705.10115v1 · doi: 10.48550/arxiv.1705.10115 · pith_short_12: VDZ7TC2WQNEY · pith_short_16: VDZ7TC2WQNEYW33R · pith_short_8: VDZ7TC2W

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/VDZ7TC2WQNEYW33RG2WIAIUZ3X \
  | 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: a8f3f98b5683498b6f7136ac802299ddf0db780f5548dca219017bace6760b72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ea8c46d50b90cfc4f836924cf47e1cbd580c1b4c323d0b2ce49e3f3bf2f6738",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2017-05-29T10:58:08Z",
    "title_canon_sha256": "64421be589d225aa5cf3bb19d36784f3f8453b7e6a87c61abf858e4c05b067ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.10115",
    "kind": "arxiv",
    "version": 1
  }
}