Pith Number

pith:L256S65W

pith:2017:L256S65W2WYVGW2EN25ODIGXMY

not attested not anchored not stored refs pending

Non-formality of planar configuration spaces in characteristic two

Paolo Salvatore

arxiv:1701.06816 v3 · 2017-01-24 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L256S65W2WYVGW2EN25ODIGXMY}

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	2026-05-18T00:32:02.887331Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5ebbe97bb6d5b1535b446ebae1a0d7660794b48e87b9f6011e1b089330f8a94f

Aliases

arxiv: 1701.06816 · arxiv_version: 1701.06816v3 · doi: 10.48550/arxiv.1701.06816 · pith_short_12: L256S65W2WYV · pith_short_16: L256S65W2WYVGW2E · pith_short_8: L256S65W

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/L256S65W2WYVGW2EN25ODIGXMY \
  | 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: 5ebbe97bb6d5b1535b446ebae1a0d7660794b48e87b9f6011e1b089330f8a94f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b11a0070bfe6e05b3419ee6f7965f579a7b8f2c8f943a1098388d482d3b691fe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2017-01-24T11:20:08Z",
    "title_canon_sha256": "69c34cbe78547a44ca953abdb80bff54b763ab27253badb557d29987205ee3b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.06816",
    "kind": "arxiv",
    "version": 3
  }
}