Pith Number

pith:SJAYHASN

pith:2018:SJAYHASNIZH33ZDRI6XN57STRX

not attested not anchored not stored refs pending

Greedy Morse matchings and discrete smoothness

Joao Lagoas, Joao Paixao, Thomas Lewiner, Tiago Novello

arxiv:1801.10118 v1 · 2018-01-30 · math.GT · cs.CG · cs.DM · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SJAYHASNIZH33ZDRI6XN57STRX}

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	2026-05-18T00:24:45.852086Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

924183824d464fbde47147aedefe538ddd38289a2a9d8daa51fd62579feefe93

Aliases

arxiv: 1801.10118 · arxiv_version: 1801.10118v1 · doi: 10.48550/arxiv.1801.10118 · pith_short_12: SJAYHASNIZH3 · pith_short_16: SJAYHASNIZH33ZDR · pith_short_8: SJAYHASN

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/SJAYHASNIZH33ZDRI6XN57STRX \
  | 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: 924183824d464fbde47147aedefe538ddd38289a2a9d8daa51fd62579feefe93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eaabb14f41c3af0509013dd28314845a7a32a01739a593b51adbd993af7d653c",
    "cross_cats_sorted": [
      "cs.CG",
      "cs.DM",
      "math.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2018-01-30T18:06:06Z",
    "title_canon_sha256": "4d463a044fd06df095acd7f791ba2541a2a22e228d16c5365a267f459955ca1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.10118",
    "kind": "arxiv",
    "version": 1
  }
}