Pith Number

pith:FFI2URLU

pith:2015:FFI2URLUSP6XUKETKZ67FGBYMA

not attested not anchored not stored refs pending

Helicity is the only invariant of incompressible flows whose derivative is continuous in $C^1$-topology

Elena A. Kudryavtseva

arxiv:1511.03746 v2 · 2015-11-12 · math.DS · math-ph · math.DG · 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{FFI2URLUSP6XUKETKZ67FGBYMA}

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	2026-05-18T00:49:04.768261Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2951aa457493fd7a2893567df29838601e422a2fc609ca569e34f7b70ce15d80

Aliases

arxiv: 1511.03746 · arxiv_version: 1511.03746v2 · doi: 10.48550/arxiv.1511.03746 · pith_short_12: FFI2URLUSP6X · pith_short_16: FFI2URLUSP6XUKET · pith_short_8: FFI2URLU

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/FFI2URLUSP6XUKETKZ67FGBYMA \
  | 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: 2951aa457493fd7a2893567df29838601e422a2fc609ca569e34f7b70ce15d80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ef0992d261301c83f7215e23101e7ed2649613018f9e09454ae5190e2e99ade",
    "cross_cats_sorted": [
      "math-ph",
      "math.DG",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2015-11-12T01:17:33Z",
    "title_canon_sha256": "689ad3c27f542012dec6978c7ac94b8599c7cb15c52f63a85a76862f625883a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.03746",
    "kind": "arxiv",
    "version": 2
  }
}