Pith Number

pith:TW5U2S3W

pith:2012:TW5U2S3WYY3GRSSNPF3ZPN4MQJ

not attested not anchored not stored refs pending

A proposal to first principles electronic structure calculation: Symbolic-Numeric method

Akihito Kikuchi

arxiv:1209.5127 v4 · 2012-09-23 · cs.SC · cond-mat.mtrl-sci · 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{TW5U2S3WYY3GRSSNPF3ZPN4MQJ}

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	2026-05-18T03:32:44.850886Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9dbb4d4b76c63668ca4d797797b78c825d1621ddfab8252993131993ebdedd7d

Aliases

arxiv: 1209.5127 · arxiv_version: 1209.5127v4 · doi: 10.48550/arxiv.1209.5127 · pith_short_12: TW5U2S3WYY3G · pith_short_16: TW5U2S3WYY3GRSSN · pith_short_8: TW5U2S3W

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/TW5U2S3WYY3GRSSNPF3ZPN4MQJ \
  | 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: 9dbb4d4b76c63668ca4d797797b78c825d1621ddfab8252993131993ebdedd7d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a1c2dd5dbf7bbd1ed23c1198eb960669e8a33fdb44b362c9afe2f30713f8af6",
    "cross_cats_sorted": [
      "cond-mat.mtrl-sci",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SC",
    "submitted_at": "2012-09-23T23:50:56Z",
    "title_canon_sha256": "dddf5591a76ea27a793211a9460d7799e5534d9d1d67e5e8a7735fe54cbaa22a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.5127",
    "kind": "arxiv",
    "version": 4
  }
}