Pith Number

pith:3JCCILQS

pith:2019:3JCCILQSCYCD6F2RAX5IIM4IRH

not attested not anchored not stored refs pending

A polynomial-time algorithm for ground states of spin trees

Nilin Abrahamsen

arxiv:1907.04862 v4 · 2019-07-10 · quant-ph · cond-mat.str-el · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3JCCILQSCYCD6F2RAX5IIM4IRH}

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.

Cited by

1 paper in Pith

Area law of non-critical ground states in 1D long-range interacting systems

Receipt and verification

First computed	2026-07-05T00:29:39.126432Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da44242e1216043f175105fa84338889dbc5b46100c491a22b2dddff5878c108

Aliases

arxiv: 1907.04862 · arxiv_version: 1907.04862v4 · doi: 10.48550/arxiv.1907.04862 · pith_short_12: 3JCCILQSCYCD · pith_short_16: 3JCCILQSCYCD6F2R · pith_short_8: 3JCCILQS

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/3JCCILQSCYCD6F2RAX5IIM4IRH \
  | 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: da44242e1216043f175105fa84338889dbc5b46100c491a22b2dddff5878c108

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "454d213d9c2ec6175615ae69dab290594295f69b90f5fb8ad0bf76da572502e0",
    "cross_cats_sorted": [
      "cond-mat.str-el",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-07-10T18:00:01Z",
    "title_canon_sha256": "4738d7a40f1b90cc49998a17c2df20e3f5718b1cd2aeb8a194f6b28d2761699c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.04862",
    "kind": "arxiv",
    "version": 4
  }
}