Pith Number

pith:XJPY42D7

pith:2015:XJPY42D7Q3GIPWDQWZUTWEY54F

not attested not anchored not stored refs pending

Excited state geometry optimization with the density matrix renormalization group as applied to polyenes

Garnet Kin-Lic Chan, Weifeng Hu

arxiv:1502.07731 v2 · 2015-02-26 · physics.chem-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{XJPY42D7Q3GIPWDQWZUTWEY54F}

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	2026-05-18T02:25:55.375466Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba5f8e687f86cc87d870b6693b131de1722d5af159d5a5b385f2175f7fc6a4ed

Aliases

arxiv: 1502.07731 · arxiv_version: 1502.07731v2 · doi: 10.48550/arxiv.1502.07731 · pith_short_12: XJPY42D7Q3GI · pith_short_16: XJPY42D7Q3GIPWDQ · pith_short_8: XJPY42D7

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/XJPY42D7Q3GIPWDQWZUTWEY54F \
  | 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: ba5f8e687f86cc87d870b6693b131de1722d5af159d5a5b385f2175f7fc6a4ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f974ca825a3f2e80f175c98b5b6efb4ec66f7cbfdf7d2a91cbe1608f124c025e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2015-02-26T20:50:43Z",
    "title_canon_sha256": "3f6614f52cf9f0718203a072df8bfd74efe36b861f664e597d2d287e4338ca12"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.07731",
    "kind": "arxiv",
    "version": 2
  }
}