Pith Number

pith:ET4E35QF

pith:2025:ET4E35QF2VDQHIS25OV6RXMNRE

not attested not anchored not stored refs pending

Discrete Lagrangian Multiforms for ABS Equations I: Quad Equations

Jacob J. Richardson, Mats Vermeeren

arxiv:2501.13012 v3 · 2025-01-22 · nlin.SI · 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{ET4E35QF2VDQHIS25OV6RXMNRE}

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	2026-07-05T11:39:06.844463Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24f84df605d54703a25aebabe8dd8d89158d684483dac6407e738b4aae06f04f

Aliases

arxiv: 2501.13012 · arxiv_version: 2501.13012v3 · doi: 10.48550/arxiv.2501.13012 · pith_short_12: ET4E35QF2VDQ · pith_short_16: ET4E35QF2VDQHIS2 · pith_short_8: ET4E35QF

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/ET4E35QF2VDQHIS25OV6RXMNRE \
  | 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: 24f84df605d54703a25aebabe8dd8d89158d684483dac6407e738b4aae06f04f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b887b3041e5b968f0dcc9fb33c84990be44a75bcc62676c3e318fcfcd528d0dd",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2025-01-22T16:55:32Z",
    "title_canon_sha256": "41ce3f5241ff0d22388f633a93c5d3c6ff33abbffeaa33b0fb4829c48ccc086a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.13012",
    "kind": "arxiv",
    "version": 3
  }
}