Pith Number

pith:FZH2JIFN

pith:2017:FZH2JIFNXV7M5XQTJPHI5W5DZQ

not attested not anchored not stored refs pending

Filling systems on surfaces

Bidyut Sanki, Shiv Parsad

arxiv:1708.06928 v4 · 2017-08-23 · 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{FZH2JIFNXV7M5XQTJPHI5W5DZQ}

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	2026-05-18T00:15:47.113711Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e4fa4a0adbd7ecede134bce8edba3cc0ec97e9f731bad711d6498d9afbf087e

Aliases

arxiv: 1708.06928 · arxiv_version: 1708.06928v4 · doi: 10.48550/arxiv.1708.06928 · pith_short_12: FZH2JIFNXV7M · pith_short_16: FZH2JIFNXV7M5XQT · pith_short_8: FZH2JIFN

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/FZH2JIFNXV7M5XQTJPHI5W5DZQ \
  | 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: 2e4fa4a0adbd7ecede134bce8edba3cc0ec97e9f731bad711d6498d9afbf087e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a2d5e46784574aafbb475cbc84e60bd70da4fedec2f65beab84f15ced95d992",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2017-08-23T09:20:46Z",
    "title_canon_sha256": "7121654c7ab5faec95c2c611ecce4b938ff3241c29169c28fd5a08832e648937"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.06928",
    "kind": "arxiv",
    "version": 4
  }
}