Pith Number

pith:XD4Y5QV6

pith:2017:XD4Y5QV6USTMGYECVXVO76I6KR

not attested not anchored not stored refs pending

Using geometric algebra to represent curvature in shell theory with applications to Starling resistors

Alastair L Gregory, Anurag Agarwal, Joan Lasenby

arxiv:1710.11542 v1 · 2017-10-31 · 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{XD4Y5QV6USTMGYECVXVO76I6KR}

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	2026-05-18T00:29:51.142508Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8f98ec2bea4a6c36082adeaeff91e54525cb1f028473b4d0482ee9ab8f150df

Aliases

arxiv: 1710.11542 · arxiv_version: 1710.11542v1 · doi: 10.48550/arxiv.1710.11542 · pith_short_12: XD4Y5QV6USTM · pith_short_16: XD4Y5QV6USTMGYEC · pith_short_8: XD4Y5QV6

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/XD4Y5QV6USTMGYECVXVO76I6KR \
  | 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: b8f98ec2bea4a6c36082adeaeff91e54525cb1f028473b4d0482ee9ab8f150df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba7b1f2d974376ea1723834fab3309d792313eee113763d7bbdd3210d2506a34",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2017-10-31T15:56:20Z",
    "title_canon_sha256": "78ab45d80e279aefd8503efa043a0aa267687b94e0be7b20cde393646dd0fdf7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.11542",
    "kind": "arxiv",
    "version": 1
  }
}