Pith Number

pith:7BBNQPWR

pith:2014:7BBNQPWRC2ZZT5EE6JTYC7VRIH

not attested not anchored not stored refs pending

Dispersion-driven ferromagnetism in a flat-band Hubbard system

Johannes Richter, Oleg Derzhko

arxiv:1404.2230 v1 · 2014-04-08 · cond-mat.str-el

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7BBNQPWRC2ZZT5EE6JTYC7VRIH}

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	2026-05-18T02:43:45.212017Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f842d83ed116b399f484f267817eb141f3bb2d3b2555a102ed7e7c8ad92b4191

Aliases

arxiv: 1404.2230 · arxiv_version: 1404.2230v1 · doi: 10.48550/arxiv.1404.2230 · pith_short_12: 7BBNQPWRC2ZZ · pith_short_16: 7BBNQPWRC2ZZT5EE · pith_short_8: 7BBNQPWR

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/7BBNQPWRC2ZZT5EE6JTYC7VRIH \
  | 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: f842d83ed116b399f484f267817eb141f3bb2d3b2555a102ed7e7c8ad92b4191

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d52a0bfb4b31eea0b5375a59e48c7d334ec14e544fb2de260823a25dbc595227",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.str-el",
    "submitted_at": "2014-04-08T17:45:06Z",
    "title_canon_sha256": "d66c9c384aea14c7abcb9e763589ee0d86ce4b6a1dc1cb0d01d3ba4dc9c3d340"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.2230",
    "kind": "arxiv",
    "version": 1
  }
}