Pith Number

pith:RI5DEZHL

pith:1998:RI5DEZHLBMQGTOXFZWAXJGOENL

not attested not anchored not stored refs pending

A natural orbital functional for the many-electron problem

C. Umrigar, S. Goedecker

arxiv:physics/9805011 v1 · 1998-05-07 · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RI5DEZHLBMQGTOXFZWAXJGOENL}

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	2026-07-04T16:10:23.951671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a3a3264eb0b2069bae5cd817499c46af943ed53b252d0c1c18195d21ad14e07

Aliases

arxiv: physics/9805011 · arxiv_version: physics/9805011v1 · doi: 10.48550/arxiv.physics/9805011 · pith_short_12: RI5DEZHLBMQG · pith_short_16: RI5DEZHLBMQGTOXF · pith_short_8: RI5DEZHL

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/RI5DEZHLBMQGTOXFZWAXJGOENL \
  | 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: 8a3a3264eb0b2069bae5cd817499c46af943ed53b252d0c1c18195d21ad14e07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed8928358d3c6b207cd9f72f71598feac1e2b5ade0a8055cccc908b443dc829e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "1998-05-07T08:49:59Z",
    "title_canon_sha256": "6e3465b16610924336bde8607a0058a36f3acdcae19e776d6fd991a0faae3a3b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/9805011",
    "kind": "arxiv",
    "version": 1
  }
}