Pith Number

pith:6YFGAKQC

pith:2009:6YFGAKQCO4B2R2Q5AK4RLRSKOK

not attested not anchored not stored refs pending

Linear Response and the Thomas-Fermi Approximation in Undoped Graphene

H.A.Fertig, L.Brey

arxiv:0904.4400 v1 · 2009-04-28 · cond-mat.mes-hall · cond-mat.mtrl-sci

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6YFGAKQCO4B2R2Q5AK4RLRSKOK}

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	2026-05-18T04:41:25.319899Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f60a602a027703a8ea1d02b915c64a728c47fee7ff250d2ef9baa4eaea40e000

Aliases

arxiv: 0904.4400 · arxiv_version: 0904.4400v1 · doi: 10.48550/arxiv.0904.4400 · pith_short_12: 6YFGAKQCO4B2 · pith_short_16: 6YFGAKQCO4B2R2Q5 · pith_short_8: 6YFGAKQC

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/6YFGAKQCO4B2R2Q5AK4RLRSKOK \
  | 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: f60a602a027703a8ea1d02b915c64a728c47fee7ff250d2ef9baa4eaea40e000

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a3ebfeb19e43433e6f8b147108b6766778d3a5299cee0197cbaf9c34deab090",
    "cross_cats_sorted": [
      "cond-mat.mtrl-sci"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mes-hall",
    "submitted_at": "2009-04-28T13:56:58Z",
    "title_canon_sha256": "57d68b9a92abd7f7b0dca7072dd3eda1dd3e815ec12be1a05ff21e7d8cf7de2c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.4400",
    "kind": "arxiv",
    "version": 1
  }
}