Pith Number

pith:NEFTQG6C

pith:2008:NEFTQG6CIYRYB3UVGNPGN66ROS

not attested not anchored not stored refs pending

Maxwell electromagnetic theory from a viewpoint of differential forms

Cheng Hao, Li Wang, Quan Shi, Shenghua Du, Yueke Hu, Yuming Hui, Yuqing Wu

arxiv:0809.0102 v4 · 2008-08-31 · 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{NEFTQG6CIYRYB3UVGNPGN66ROS}

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	2026-05-18T04:07:06.926587Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

690b381bc2462380ee95335e66fbd174bede541c251678ea3dfb59a29f58aa33

Aliases

arxiv: 0809.0102 · arxiv_version: 0809.0102v4 · doi: 10.48550/arxiv.0809.0102 · pith_short_12: NEFTQG6CIYRY · pith_short_16: NEFTQG6CIYRYB3UV · pith_short_8: NEFTQG6C

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/NEFTQG6CIYRYB3UVGNPGN66ROS \
  | 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: 690b381bc2462380ee95335e66fbd174bede541c251678ea3dfb59a29f58aa33

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "696b717c1b24e35e6f3be635785ce29e2e3f606bb630eafb5a91ff03643147b4",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2008-08-31T05:43:35Z",
    "title_canon_sha256": "da86728ff464a667939b5b35c1ea46854b6c6cac06ecbe641b332859ce50217e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.0102",
    "kind": "arxiv",
    "version": 4
  }
}