Pith Number

pith:2PHLRKBC

pith:2015:2PHLRKBCYJ35KAOXTLUW43P3IU

not attested not anchored not stored refs pending

Fast algorithms for morphological operations using run-length encoded binary images

Alexander Ostermann, Felix Schwitzer, Gregor Ehrensperger

arxiv:1504.01052 v1 · 2015-04-04 · cs.CV · cs.GR · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2PHLRKBCYJ35KAOXTLUW43P3IU}

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	2026-05-18T02:19:35.277166Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3ceb8a822c277d501d79ae96e6dfb450fe105271ee9275289f9524a7c5fa9d4

Aliases

arxiv: 1504.01052 · arxiv_version: 1504.01052v1 · doi: 10.48550/arxiv.1504.01052 · pith_short_12: 2PHLRKBCYJ35 · pith_short_16: 2PHLRKBCYJ35KAOX · pith_short_8: 2PHLRKBC

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/2PHLRKBCYJ35KAOXTLUW43P3IU \
  | 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: d3ceb8a822c277d501d79ae96e6dfb450fe105271ee9275289f9524a7c5fa9d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6aff265cc8a56d9882ec31c550078da33e70392c9bd5944abbf2303a64fef7f",
    "cross_cats_sorted": [
      "cs.GR",
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2015-04-04T20:51:43Z",
    "title_canon_sha256": "a5ddce227ecd0b9244a933a7a8ddf04f18c2e7639a6a31f4547646269a9659d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.01052",
    "kind": "arxiv",
    "version": 1
  }
}