Pith Number

pith:L7QGNYXK

pith:2019:L7QGNYXKOZTT4YMFZHJV622NY3

not attested not anchored not stored refs pending

A^1-homotopy theory and contractible varieties: a survey

Aravind Asok, Paul Arne {\O}stv{\ae}r

arxiv:1903.07851 v1 · 2019-03-19 · math.AG · math.AT · math.GT · math.HO · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L7QGNYXKOZTT4YMFZHJV622NY3}

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	2026-05-17T23:50:53.692060Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5fe066e2ea76673e6185c9d35f6b4dc6feca4dd0487aa958492c2c8d36b7e783

Aliases

arxiv: 1903.07851 · arxiv_version: 1903.07851v1 · doi: 10.48550/arxiv.1903.07851 · pith_short_12: L7QGNYXKOZTT · pith_short_16: L7QGNYXKOZTT4YMF · pith_short_8: L7QGNYXK

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/L7QGNYXKOZTT4YMFZHJV622NY3 \
  | 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: 5fe066e2ea76673e6185c9d35f6b4dc6feca4dd0487aa958492c2c8d36b7e783

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78ba28b2493f85e4e68e8ec04674ca168e6b930dedd822a3e2e5fc326b0a291b",
    "cross_cats_sorted": [
      "math.AT",
      "math.GT",
      "math.HO",
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-03-19T06:09:30Z",
    "title_canon_sha256": "1b6c0667a56f88362ee5def495c999b45195a7d130a4304dcb8f99ce328eef46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.07851",
    "kind": "arxiv",
    "version": 1
  }
}