Pith Number

pith:VYRJOYAQ

pith:2019:VYRJOYAQQ42L4AHT35I6ZWOETP

not attested not anchored not stored refs pending

Strong homotopy of digitally continuous functions

P. Christopher Staecker

arxiv:1903.00706 v1 · 2019-03-02 · math.GN · cs.CV · 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{VYRJOYAQQ42L4AHT35I6ZWOETP}

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	2026-05-17T23:52:13.567646Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae229760108734be00f3df51ecd9c49bf10da42fbee9ac31600853c9c4ac828d

Aliases

arxiv: 1903.00706 · arxiv_version: 1903.00706v1 · doi: 10.48550/arxiv.1903.00706 · pith_short_12: VYRJOYAQQ42L · pith_short_16: VYRJOYAQQ42L4AHT · pith_short_8: VYRJOYAQ

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/VYRJOYAQQ42L4AHT35I6ZWOETP \
  | 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: ae229760108734be00f3df51ecd9c49bf10da42fbee9ac31600853c9c4ac828d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6e000e6bcaac30404ad8daf2e2b0adc364174eb79dad664fcbe1a2ee24fd15b",
    "cross_cats_sorted": [
      "cs.CV",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2019-03-02T14:11:43Z",
    "title_canon_sha256": "5def32e80b2c05a25539c28a229c6787da49e62b26f79f8859f277ff0aee15ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.00706",
    "kind": "arxiv",
    "version": 1
  }
}