Pith Number

pith:BHTNXO2N

pith:2014:BHTNXO2NGRRDYCR3CM77GSS6QF

not attested not anchored not stored refs pending

The fundamental group and Betti numbers of toric origami manifolds

Ana Rita Pires, Tara S. Holm

arxiv:1407.4737 v1 · 2014-07-17 · math.SG · 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{BHTNXO2NGRRDYCR3CM77GSS6QF}

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	2026-05-18T01:22:22.003701Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09e6dbbb4d34623c0a3b133ff34a5e8175e2ef13f2f6919180b7823247f94afa

Aliases

arxiv: 1407.4737 · arxiv_version: 1407.4737v1 · doi: 10.48550/arxiv.1407.4737 · pith_short_12: BHTNXO2NGRRD · pith_short_16: BHTNXO2NGRRDYCR3 · pith_short_8: BHTNXO2N

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/BHTNXO2NGRRDYCR3CM77GSS6QF \
  | 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: 09e6dbbb4d34623c0a3b133ff34a5e8175e2ef13f2f6919180b7823247f94afa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "865b2c42eee846b3527e083e942af2dbbad443f7a39666d78c377bfcc5c06236",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2014-07-17T17:03:20Z",
    "title_canon_sha256": "9c1100341bfb61ea1d81c88abe11b708b3b209b2d41523ca9564a1fa6de4ed9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.4737",
    "kind": "arxiv",
    "version": 1
  }
}