Pith Number

pith:SAPUN3DE

pith:2018:SAPUN3DE53CTLT3R6JH75PDDPY

not attested not anchored not stored refs pending

A Numerical Framework for Efficient Motion Estimation on Evolving Sphere-Like Surfaces based on Brightness and Mass Conservation Laws

Lukas F. Lang

arxiv:1805.01006 v1 · 2018-05-02 · math.OC · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SAPUN3DE53CTLT3R6JH75PDDPY}

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	2026-05-18T00:16:52.912907Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

901f46ec64eec535cf71f24ffebc637e025666406ee402a3ddf516f2b0bbee88

Aliases

arxiv: 1805.01006 · arxiv_version: 1805.01006v1 · doi: 10.48550/arxiv.1805.01006 · pith_short_12: SAPUN3DE53CT · pith_short_16: SAPUN3DE53CTLT3R · pith_short_8: SAPUN3DE

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/SAPUN3DE53CTLT3R6JH75PDDPY \
  | 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: 901f46ec64eec535cf71f24ffebc637e025666406ee402a3ddf516f2b0bbee88

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "869f90effd9365c23e304d5c94d4e333779e098c7f594092483287606dd801b3",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-05-02T20:30:01Z",
    "title_canon_sha256": "06f22520d7844ceccdd0eddfad312f39fa5513352218a39841231d80f4990d79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.01006",
    "kind": "arxiv",
    "version": 1
  }
}