Pith Number

pith:VPUZQFJ3

pith:2017:VPUZQFJ3TP7IFWA2EVE5BISYDG

not attested not anchored not stored refs pending

Maxwell's equations in media as a contact Hamiltonian vector field and its information geometry -- An approach with a bundle whose fiber is a contact manifold

Shin-itiro Goto

arxiv:1702.05746 v1 · 2017-02-19 · math-ph · math.MP · nlin.PS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VPUZQFJ3TP7IFWA2EVE5BISYDG}

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	2026-05-18T00:50:25.427351Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abe998153b9bfe82d81a2549d0a25819b9d3079f4aaf5697d6627a2be28580c2

Aliases

arxiv: 1702.05746 · arxiv_version: 1702.05746v1 · doi: 10.48550/arxiv.1702.05746 · pith_short_12: VPUZQFJ3TP7I · pith_short_16: VPUZQFJ3TP7IFWA2 · pith_short_8: VPUZQFJ3

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/VPUZQFJ3TP7IFWA2EVE5BISYDG \
  | 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: abe998153b9bfe82d81a2549d0a25819b9d3079f4aaf5697d6627a2be28580c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "218d4e18aa649aaf050b2f013871bcd794fc942284362112a978d1e13888b43e",
    "cross_cats_sorted": [
      "math.MP",
      "nlin.PS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2017-02-19T12:58:19Z",
    "title_canon_sha256": "eee731900ce462c79493b5f2960a1e44d180161ab9fe803fa74f29d58a05e206"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.05746",
    "kind": "arxiv",
    "version": 1
  }
}