Pith Number

pith:P2PXQ3VR

pith:2015:P2PXQ3VRPQCNDZFKQGAAPUKIBD

not attested not anchored not stored refs pending

Rigidity theorems for K- and H-cohomology and other functors

Uwe Jannsen

arxiv:1503.08742 v2 · 2015-03-30 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P2PXQ3VRPQCNDZFKQGAAPUKIBD}

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	2026-05-18T00:17:27.420173Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e9f786eb17c04d1e4aa818007d14808fe18491fda74e4777dd757173b75e242

Aliases

arxiv: 1503.08742 · arxiv_version: 1503.08742v2 · doi: 10.48550/arxiv.1503.08742 · pith_short_12: P2PXQ3VRPQCN · pith_short_16: P2PXQ3VRPQCNDZFK · pith_short_8: P2PXQ3VR

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/P2PXQ3VRPQCNDZFKQGAAPUKIBD \
  | 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: 7e9f786eb17c04d1e4aa818007d14808fe18491fda74e4777dd757173b75e242

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a048be411e16c04f09ad598847b14caab9f7a7449ba734d40b06c60443ab62e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-03-30T17:03:27Z",
    "title_canon_sha256": "5c1f1f189d03ddc614fc64e6f1d4cfb4f688fbac7f6b16dcf51a33662a4064ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.08742",
    "kind": "arxiv",
    "version": 2
  }
}