Pith Number

pith:KWCVV7G3

pith:2026:KWCVV7G3VZRP5GQ3KFDHWXSEHP

not attested not anchored not stored refs pending

Obstructions to Spin(7) Nahm transforms on tori

Spencer Whitehead

arxiv:2607.28303 v1 · 2026-07-30 · 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{KWCVV7G3VZRP5GQ3KFDHWXSEHP}

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	2026-07-31T01:37:11.112029Z
Builder	pith-number-builder-2026-05-17-v1
Signature	unsigned_v0
Schema	pith-number/v1.0

Canonical hash

55855afcdbae62fe9a1b51467b5e443be27e1a74d94b3234962de0fc4136206a

Aliases

arxiv: 2607.28303 · arxiv_version: 2607.28303v1 · doi: 10.48550/arxiv.2607.28303 · pith_short_12: KWCVV7G3VZRP · pith_short_16: KWCVV7G3VZRP5GQ3 · pith_short_8: KWCVV7G3

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/KWCVV7G3VZRP5GQ3KFDHWXSEHP \
  | 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: 55855afcdbae62fe9a1b51467b5e443be27e1a74d94b3234962de0fc4136206a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6387906ee6ebeb5fd727e1c2c02923774064373b2e1c2b682f6e946d5e93cdb",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2026-07-30T14:43:54Z",
    "title_canon_sha256": "4bddc091d014399a90f60cd46227dc2a3c12331614553f8ad2a11bb79cab1d56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.28303",
    "kind": "arxiv",
    "version": 1
  }
}