Pith Number

pith:4ERM7Q64

pith:2018:4ERM7Q64XP7PTEN2ARZGUF35I7

not attested not anchored not stored refs pending

Hamiltonian boundary value problems, conformal symplectic symmetries, and conjugate loci

Christian Offen, Robert I McLachlan

arxiv:1804.07479 v3 · 2018-04-20 · math.DG · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4ERM7Q64XP7PTEN2ARZGUF35I7}

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	2026-07-05T06:52:41.880007Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e122cfc3dcbbfef991ba04726a177d47c6107f9076f6890d64c26e8c1fef07ba

Aliases

arxiv: 1804.07479 · arxiv_version: 1804.07479v3 · doi: 10.48550/arxiv.1804.07479 · pith_short_12: 4ERM7Q64XP7P · pith_short_16: 4ERM7Q64XP7PTEN2 · pith_short_8: 4ERM7Q64

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/4ERM7Q64XP7PTEN2ARZGUF35I7 \
  | 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: e122cfc3dcbbfef991ba04726a177d47c6107f9076f6890d64c26e8c1fef07ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c66be4f1dec942db9be94ee989c5a8d9e523324e7a467a1756bd8a3a0f97981",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-04-20T07:48:51Z",
    "title_canon_sha256": "f1079adaa813c8325a65a42ee7da92d292b5ef434e86e5fd46a524ca82b18d7a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.07479",
    "kind": "arxiv",
    "version": 3
  }
}