Pith Number

pith:WXDBH4ZL

pith:2009:WXDBH4ZLC5M7K7Q4GMBPKOVIME

not attested not anchored not stored refs pending

Differential orbifold K-Theory

Thomas Schick (Georg-August-Universit\"at G\"ottingen), Ulrich Bunke (Regensburg)

arxiv:0905.4181 v3 · 2009-05-26 · math.KT · 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{WXDBH4ZLC5M7K7Q4GMBPKOVIME}

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	2026-05-18T01:36:52.047248Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5c613f32b1759f57e1c3302f53aa861262d34a49739d0b568e7fc0b59625990

Aliases

arxiv: 0905.4181 · arxiv_version: 0905.4181v3 · doi: 10.48550/arxiv.0905.4181 · pith_short_12: WXDBH4ZLC5M7 · pith_short_16: WXDBH4ZLC5M7K7Q4 · pith_short_8: WXDBH4ZL

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/WXDBH4ZLC5M7K7Q4GMBPKOVIME \
  | 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: b5c613f32b1759f57e1c3302f53aa861262d34a49739d0b568e7fc0b59625990

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4c39ebe2a63e17cbfb6cf53063c20ba3601af4cdc2a0531662009dafd275e0f",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2009-05-26T12:16:23Z",
    "title_canon_sha256": "658f0f3fa0891f29a9282cc47e9d1c15a211156304ece6ac13aa12f0cfc74dd9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.4181",
    "kind": "arxiv",
    "version": 3
  }
}