Pith Number

pith:EJXNSK3W

pith:2017:EJXNSK3WG5JVXEM6WPLQKYBCPJ

not attested not anchored not stored refs pending

The homotopy fibre of the inclusion $F\_n(M) \lhook\joinrel\longrightarrow \prod\_{1}^{n} M$ for $M$ either $\mathbb{S}^2$ or$\mathbb{R}P^2$ and orbit configuration spaces

Daciberg Lima Gon\c{c}alves (USP, IME), John Guaschi (LMNO, NU), UNICAEN

arxiv:1710.11544 v1 · 2017-10-31 · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EJXNSK3WG5JVXEM6WPLQKYBCPJ}

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	2026-05-18T00:31:37.014308Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

226ed92b7637535b919eb3d70560227a584dbf4fcfb81cff62660e8d775c0ddd

Aliases

arxiv: 1710.11544 · arxiv_version: 1710.11544v1 · doi: 10.48550/arxiv.1710.11544 · pith_short_12: EJXNSK3WG5JV · pith_short_16: EJXNSK3WG5JVXEM6 · pith_short_8: EJXNSK3W

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/EJXNSK3WG5JVXEM6WPLQKYBCPJ \
  | 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: 226ed92b7637535b919eb3d70560227a584dbf4fcfb81cff62660e8d775c0ddd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75acfcdfef6940ac4b142f18dd55d7fafab21b4b0a5387e320d5aec2043263ac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2017-10-31T15:58:22Z",
    "title_canon_sha256": "9905d9e7aa342c8cfaad96c5fb4ff6b3f78eeed68b0f11920893165bb8cf11e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.11544",
    "kind": "arxiv",
    "version": 1
  }
}