Pith Number

pith:DK5H5FHZ

pith:2026:DK5H5FHZJYIW2FFNOW7KOBZTIC

not attested not anchored not stored refs pending

Real algebraic varieties and their intersection cohomology

Chris Hone

arxiv:2606.09149 v1 · 2026-06-08 · math.AG · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DK5H5FHZJYIW2FFNOW7KOBZTIC}

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	2026-06-09T02:08:02.802713Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1aba7e94f94e116d14ad75bea70733408e7bdd2d94331fae78f0677985b3c9d2

Aliases

arxiv: 2606.09149 · arxiv_version: 2606.09149v1 · doi: 10.48550/arxiv.2606.09149 · pith_short_12: DK5H5FHZJYIW · pith_short_16: DK5H5FHZJYIW2FFN · pith_short_8: DK5H5FHZ

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/DK5H5FHZJYIW2FFNOW7KOBZTIC \
  | 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: 1aba7e94f94e116d14ad75bea70733408e7bdd2d94331fae78f0677985b3c9d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "885d6c190363c14d76fba4c4bc403f87779737666d4e0de997f6acab22323dfb",
    "cross_cats_sorted": [
      "math.RT"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2026-06-08T07:44:10Z",
    "title_canon_sha256": "a54cd59789d7027909c3bbe2d565606e72c1d25e00ee802fdac973660590a07c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.09149",
    "kind": "arxiv",
    "version": 1
  }
}