Pith Number

pith:TU73VCRL

pith:2017:TU73VCRLGHTPZ3ALM7AH5HTZIX

not attested not anchored not stored refs pending

Boundary value problems in dimensions seven, four and three related to exceptional holonomy

Simon Donaldson

arxiv:1708.01649 v1 · 2017-08-04 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TU73VCRLGHTPZ3ALM7AH5HTZIX}

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	2026-05-18T00:38:35.302771Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d3fba8a2b31e6fcec0b67c07e9e7945e4e52ea1a704ba9ab89bc0ba09c1b358

Aliases

arxiv: 1708.01649 · arxiv_version: 1708.01649v1 · doi: 10.48550/arxiv.1708.01649 · pith_short_12: TU73VCRLGHTP · pith_short_16: TU73VCRLGHTPZ3AL · pith_short_8: TU73VCRL

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/TU73VCRLGHTPZ3ALM7AH5HTZIX \
  | 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: 9d3fba8a2b31e6fcec0b67c07e9e7945e4e52ea1a704ba9ab89bc0ba09c1b358

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1417b830f4c325996c2276762f85992ccf0868eca2e9428e1e00edb27aa979fb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-08-04T19:32:55Z",
    "title_canon_sha256": "d2ee76978f2ccf83f5a693cd5a591daa4f01413ac75325752faa1ed39747abcf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.01649",
    "kind": "arxiv",
    "version": 1
  }
}