Pith Number

pith:4M6NLVFR

pith:2018:4M6NLVFRKHXKIREQG6UBJ5N6GP

not attested not anchored not stored refs pending

On the image of the unstable Boardman map

Hadi Zare

arxiv:1806.07079 v2 · 2018-06-19 · 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{4M6NLVFRKHXKIREQG6UBJ5N6GP}

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	2026-05-17T23:43:28.358216Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e33cd5d4b151eea4449037a814f5be33d4f7b5581dadf670f99c65ac609a05c5

Aliases

arxiv: 1806.07079 · arxiv_version: 1806.07079v2 · doi: 10.48550/arxiv.1806.07079 · pith_short_12: 4M6NLVFRKHXK · pith_short_16: 4M6NLVFRKHXKIREQ · pith_short_8: 4M6NLVFR

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/4M6NLVFRKHXKIREQG6UBJ5N6GP \
  | 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: e33cd5d4b151eea4449037a814f5be33d4f7b5581dadf670f99c65ac609a05c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ae2f4b3b974243ceaa864844ab839e98f858704ca96a93c31033e17feee6ae3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2018-06-19T07:32:06Z",
    "title_canon_sha256": "3b651c456a0bea2ec6e6fdfee95d70d839764dd03cf06d3154d2c88c5b4e6648"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.07079",
    "kind": "arxiv",
    "version": 2
  }
}