Pith Number

pith:6KTHVCWS

pith:2020:6KTHVCWSOP5O5SMCDYCOYSRHNM

not attested not anchored not stored refs pending

Unified Lagrangian-Hamiltonian formalism for contact systems

Jordi Gaset, Manuel de Le\'on, Manuel La\'inz, Narciso Rom\'an-Roy, Xavier Rivas

arxiv:2003.13037 v2 · 2020-03-29 · 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{6KTHVCWSOP5O5SMCDYCOYSRHNM}

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	2026-07-05T01:26:40.619624Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f2a67a8ad273faeec9821e04ec4a276b10e7641e23b9f3cf11270d9a67e4b5a4

Aliases

arxiv: 2003.13037 · arxiv_version: 2003.13037v2 · doi: 10.48550/arxiv.2003.13037 · pith_short_12: 6KTHVCWSOP5O · pith_short_16: 6KTHVCWSOP5O5SMC · pith_short_8: 6KTHVCWS

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/6KTHVCWSOP5O5SMCDYCOYSRHNM \
  | 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: f2a67a8ad273faeec9821e04ec4a276b10e7641e23b9f3cf11270d9a67e4b5a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "382081269e4aaad75e25e87049a8f19267467c143110a52940e33316a4211a83",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2020-03-29T14:29:16Z",
    "title_canon_sha256": "39958fb2a893136748c256792ad2e865b31ccadfabbbb97c3c683979ee3305f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.13037",
    "kind": "arxiv",
    "version": 2
  }
}