Pith Number

pith:XRMPFDNM

pith:2017:XRMPFDNM62UZISAW7V3UMYF3GQ

not attested not anchored not stored refs pending

On the brachistochrone of a fluid-filled cylinder

Mahesh V. Panchagnula, Pallab Sinha Mahapatra, Sharan Raja, Srikanth Sarma Gurram

arxiv:1712.04647 v8 · 2017-12-13 · 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{XRMPFDNM62UZISAW7V3UMYF3GQ}

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	2026-05-17T23:52:44.398528Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc58f28dacf6a9944816fd774660bb3425cd4a0f3d27a539eeaa283aff430b37

Aliases

arxiv: 1712.04647 · arxiv_version: 1712.04647v8 · doi: 10.48550/arxiv.1712.04647 · pith_short_12: XRMPFDNM62UZ · pith_short_16: XRMPFDNM62UZISAW · pith_short_8: XRMPFDNM

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/XRMPFDNM62UZISAW7V3UMYF3GQ \
  | 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: bc58f28dacf6a9944816fd774660bb3425cd4a0f3d27a539eeaa283aff430b37

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "844e3a8385318c44dd6eba5732c9bbd77d5f29a53d0ebe9eeb5f99d8548aeead",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2017-12-13T08:06:24Z",
    "title_canon_sha256": "278976497c619b7982e77f4503aaec68b2a9b2fedef640de9c00226eea537739"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.04647",
    "kind": "arxiv",
    "version": 8
  }
}