Pith Number

pith:4X4DTH4Q

pith:2018:4X4DTH4Q3UMQKGVRIUNOM266E5

not attested not anchored not stored refs pending

Affine Geometry, Visual Sensation, and Preference for Symmetry of Things in a Thing

Birgitta Dresp-Langley

arxiv:1808.08565 v1 · 2018-08-26 · q-bio.NC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4X4DTH4Q3UMQKGVRIUNOM266E5}

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	2026-05-18T00:06:36.683932Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5f8399f90dd19051ab1451ae66bde2758d2394c5598ba6f168cb9ce7f08490a

Aliases

arxiv: 1808.08565 · arxiv_version: 1808.08565v1 · doi: 10.48550/arxiv.1808.08565 · pith_short_12: 4X4DTH4Q3UMQ · pith_short_16: 4X4DTH4Q3UMQKGVR · pith_short_8: 4X4DTH4Q

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/4X4DTH4Q3UMQKGVRIUNOM266E5 \
  | 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: e5f8399f90dd19051ab1451ae66bde2758d2394c5598ba6f168cb9ce7f08490a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f685fe956981ce0f10a5e276d82da65889f6800e854898952033823c9d9c1396",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.NC",
    "submitted_at": "2018-08-26T14:45:24Z",
    "title_canon_sha256": "df02af2aae9911a8c306d8fee1928d28469a58559a55bd387e2f975f63cc8b44"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.08565",
    "kind": "arxiv",
    "version": 1
  }
}