Pith Number

pith:PKVR6FZF

pith:2011:PKVR6FZF7IO656LMCHPISASZNP

not attested not anchored not stored refs pending

Dimer and fermionic formulations of a class of colouring problems

J. O. Fjaerestad

arxiv:1109.0157 v2 · 2011-09-01 · cond-mat.stat-mech

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PKVR6FZF7IO656LMCHPISASZNP}

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	2026-05-18T02:00:43.406952Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7aab1f1725fa1deef96c11de8902596bcff0be0c77917a45c6086df6bad0b3c6

Aliases

arxiv: 1109.0157 · arxiv_version: 1109.0157v2 · doi: 10.48550/arxiv.1109.0157 · pith_short_12: PKVR6FZF7IO6 · pith_short_16: PKVR6FZF7IO656LM · pith_short_8: PKVR6FZF

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/PKVR6FZF7IO656LMCHPISASZNP \
  | 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: 7aab1f1725fa1deef96c11de8902596bcff0be0c77917a45c6086df6bad0b3c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23b6a922462f91ff7cb1f50b2ea5bc2ac81c4bede93ad9e2811311768327eff3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.stat-mech",
    "submitted_at": "2011-09-01T11:41:46Z",
    "title_canon_sha256": "3278d39fd37ed631ee9dc627bd3028b59e220008c6d9404b111a45254b838dfd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.0157",
    "kind": "arxiv",
    "version": 2
  }
}