Pith Number

pith:ZQYGQO25

pith:2013:ZQYGQO25NB6OTAT7JNY4FMDPMX

not attested not anchored not stored refs pending

Constitutive relations and Schroedinger's formulation of nonlinear electromagnetic theories

Paolo Aschieri, Sergio Ferrara

arxiv:1302.4737 v2 · 2013-02-19 · hep-th · 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{ZQYGQO25NB6OTAT7JNY4FMDPMX}

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	2026-05-18T01:51:35.192738Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc30683b5d687ce9827f4b71c2b06f65dbddb1216f4f2835d1009a5e0379c618

Aliases

arxiv: 1302.4737 · arxiv_version: 1302.4737v2 · doi: 10.48550/arxiv.1302.4737 · pith_short_12: ZQYGQO25NB6O · pith_short_16: ZQYGQO25NB6OTAT7 · pith_short_8: ZQYGQO25

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/ZQYGQO25NB6OTAT7JNY4FMDPMX \
  | 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: cc30683b5d687ce9827f4b71c2b06f65dbddb1216f4f2835d1009a5e0379c618

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c507c52313c945edcc0547eb94a1f79a79de9754eeaaa825ef084f136a3d249",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2013-02-19T20:54:24Z",
    "title_canon_sha256": "c9363217613b504258e50cd6b81d2ac5fe03ac1e9defea435c504766d9d375d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.4737",
    "kind": "arxiv",
    "version": 2
  }
}