Pith Number

pith:SQMB2FVH

pith:2019:SQMB2FVHZJL5BOW2I7ZGL6HHW2

not attested not anchored not stored refs pending

Bilateral symmetry strengthens the perceptual salience of figure against ground

Birgitta Dresp-Langley

arxiv:1904.06712 v1 · 2019-04-14 · 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{SQMB2FVHZJL5BOW2I7ZGL6HHW2}

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	2026-05-17T23:48:36.423775Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

94181d16a7ca57d0bada47f265f8e7b693046295542e152423cff821a3089f0d

Aliases

arxiv: 1904.06712 · arxiv_version: 1904.06712v1 · doi: 10.48550/arxiv.1904.06712 · pith_short_12: SQMB2FVHZJL5 · pith_short_16: SQMB2FVHZJL5BOW2 · pith_short_8: SQMB2FVH

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/SQMB2FVHZJL5BOW2I7ZGL6HHW2 \
  | 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: 94181d16a7ca57d0bada47f265f8e7b693046295542e152423cff821a3089f0d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0187f783b600557c42c17af724dcc1727aac773b0a33a7d92c97c03f3298465",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.NC",
    "submitted_at": "2019-04-14T15:46:37Z",
    "title_canon_sha256": "c2c47331e33dcb88c99229188e7979641e3eee4fc6889baf3bad2750ea016a2a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.06712",
    "kind": "arxiv",
    "version": 1
  }
}