Pith Number

pith:SDARZ6CY

pith:2018:SDARZ6CY73EFAJZMA3JY566BVF

not attested not anchored not stored refs pending

Some results on extension of maps and applications

A. Libardi, C. Biasi, E. dos Santos, T. Melo

arxiv:1801.09336 v1 · 2018-01-29 · 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{SDARZ6CY73EFAJZMA3JY566BVF}

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	2026-05-18T00:24:57.762172Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90c11cf858fec850272c06d38efbc1a952ae6f7136dbea5bfad106f1d636973e

Aliases

arxiv: 1801.09336 · arxiv_version: 1801.09336v1 · doi: 10.48550/arxiv.1801.09336 · pith_short_12: SDARZ6CY73EF · pith_short_16: SDARZ6CY73EFAJZM · pith_short_8: SDARZ6CY

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/SDARZ6CY73EFAJZMA3JY566BVF \
  | 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: 90c11cf858fec850272c06d38efbc1a952ae6f7136dbea5bfad106f1d636973e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dce0c37adbd1ea1fbbd70aafa9f79d45b2c84d1e8f01ee14631826a8aa0cab42",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2018-01-29T01:23:41Z",
    "title_canon_sha256": "040d334535f5bf49fc5ae03913c6308d2f22c49fb8fbd03f6f740a734c6d44b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.09336",
    "kind": "arxiv",
    "version": 1
  }
}