Pith Number

pith:M4EDWHUI

pith:2017:M4EDWHUIYGUQO2V34DM4UOKCJX

not attested not anchored not stored refs pending

Rigidity theorem for presheaves with Witt-transfers

Andrei Druzhinin

arxiv:1704.03784 v2 · 2017-04-12 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M4EDWHUIYGUQO2V34DM4UOKCJX}

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	2026-05-18T00:46:24.872917Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

67083b1e88c1a9076abbe0d9ca39424ded001e705d2be2b7408854bbe7133c50

Aliases

arxiv: 1704.03784 · arxiv_version: 1704.03784v2 · doi: 10.48550/arxiv.1704.03784 · pith_short_12: M4EDWHUIYGUQ · pith_short_16: M4EDWHUIYGUQO2V3 · pith_short_8: M4EDWHUI

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/M4EDWHUIYGUQO2V34DM4UOKCJX \
  | 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: 67083b1e88c1a9076abbe0d9ca39424ded001e705d2be2b7408854bbe7133c50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f3b48b1aab5c97e0944abac9b66f74fba8bd23164e7481b88ce3de7be49c63d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-04-12T14:57:49Z",
    "title_canon_sha256": "44609441afabbdc47d20971229b434ef1ebb954832a1cbb0c19fde38d4ff4895"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.03784",
    "kind": "arxiv",
    "version": 2
  }
}