Pith Number

pith:J5PIY6UK

pith:2021:J5PIY6UKOSVUYFDAALPYC62LAZ

not attested not anchored not stored refs pending

Surface tension as the destabiliser of a vortical interface

Prasad Perlekar, Rama Govindarajan, Rashmi Ramadugu

arxiv:2102.10644 v2 · 2021-02-21 · physics.flu-dyn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J5PIY6UKOSVUYFDAALPYC62LAZ}

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	2026-07-05T06:22:55.243670Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f5e8c7a8a74ab4c146002df817b4b0669a04235d815201bdc8603ae77933f43

Aliases

arxiv: 2102.10644 · arxiv_version: 2102.10644v2 · doi: 10.48550/arxiv.2102.10644 · pith_short_12: J5PIY6UKOSVU · pith_short_16: J5PIY6UKOSVUYFDA · pith_short_8: J5PIY6UK

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/J5PIY6UKOSVUYFDAALPYC62LAZ \
  | 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: 4f5e8c7a8a74ab4c146002df817b4b0669a04235d815201bdc8603ae77933f43

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d049a9e85f2c44e39273c4acb2261ead6768078a5972811bd28496ae47600c7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2021-02-21T16:59:52Z",
    "title_canon_sha256": "fc6ef31bb4a4820808cbb6ba72f1c9a9394463864c66e1f6dd8006a4b4e9eb4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.10644",
    "kind": "arxiv",
    "version": 2
  }
}