Pith Number

pith:UGH3IKFX

pith:2017:UGH3IKFXSRBJBLEW5YS6SFWI5I

not attested not anchored not stored refs pending

The Elastic Theory of Shells using Geometric Algebra

Alastair Gregory, Anurag Agarwal, Joan Lasenby

arxiv:1702.04554 v1 · 2017-02-15 · 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{UGH3IKFXSRBJBLEW5YS6SFWI5I}

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	2026-05-18T00:31:00.129974Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a18fb428b7944290ac96ee25e916c8ea3c13a5437712358826d1d5fcc3e500e5

Aliases

arxiv: 1702.04554 · arxiv_version: 1702.04554v1 · doi: 10.48550/arxiv.1702.04554 · pith_short_12: UGH3IKFXSRBJ · pith_short_16: UGH3IKFXSRBJBLEW · pith_short_8: UGH3IKFX

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/UGH3IKFXSRBJBLEW5YS6SFWI5I \
  | 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: a18fb428b7944290ac96ee25e916c8ea3c13a5437712358826d1d5fcc3e500e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "38a05dbcb690bba2ffb9eb71b12089cff8b8534bb75c5eff8ac93cc2f6ce43b1",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2017-02-15T11:28:56Z",
    "title_canon_sha256": "76b4e219b0de72a7cc105b3977c2896d7907fafad1029bf178cf1422e8836686"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.04554",
    "kind": "arxiv",
    "version": 1
  }
}